在yii2中搜索不起作用

I want to do search in Nama Mahasiswa search bar like picture below. As example I type name yuhara but there are no result whereas there are yuhara in the database.

Search model codes:

<?php

namespace app\models;

use Yii;
use yii\base\Model;
use yii\data\ActiveDataProvider;
use app\models\AlumnyS3;
use app\models\AlumniIntegrasi;
/**
 * AlumnyS3Search represents the model behind the search form about `app\models\AlumnyS3`.
 */
class AlumnyS3Search extends AlumnyS3
{
    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['Alumnys3ID'], 'integer'],
            [['NRP', 'NamaMahasiswa', 'ProgramStudi', 'TanggalMasuk', 'TanggalKeluar'], 'safe'],
        ];
    }
    public $NamaMahasiswa;

    /*public $TanggalMasuk;
    public $tanggalMasukText;*/
    /**
     * @inheritdoc
     */
    public function scenarios()
    {
        // bypass scenarios() implementation in the parent class
        return Model::scenarios();
    }

    /**
     * Creates data provider instance with search query applied
     *
     * @param array $params
     *
     * @return ActiveDataProvider
     */
    public function search($params)
    {
        $query = AlumnyS3::find();
        $query->joinWith('alumniIntegrasi');

        // add conditions that should always apply here

        $dataProvider = new ActiveDataProvider([
            'query' => $query,
        ]);

        $this->load($params);

        if (!$this->validate()) {
            // uncomment the following line if you do not want to return any records when validation fails
            // $query->where('0=1');
            return $dataProvider;
        }

        // grid filtering conditions
        $query->andFilterWhere([
            'Alumnys3ID' => $this->Alumnys3ID,
        ]);



            $query->andFilterWhere([
                'alumnys3.NRP' => $this->NRP,
                'alumniintegrasi.NamaMahasiswa' => $this->NamaMahasiswa,
                'alumnys3.ProgramStudi' => $this->ProgramStudi,
                'alumnys3.TanggalMasuk' => $this->TanggalMasuk,
                'alumnys3.TanggaKeluar' => $this->TanggalKeluar

            ]);

        return $dataProvider;
    }
}

Model codes:

<?php

namespace app\models;

use Yii;

/**
 * This is the model class for table "alumnys3".
 *
 * @property integer $Alumnys3ID
 * @property string $NRP
 * @property string $ProgramStudi
 * @property string $TanggalMasuk
 * @property string $TanggalKeluar
 *
 * @property AlumniIntegrasi $nRP
 */
class AlumnyS3 extends \yii\db\ActiveRecord
{
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'alumnys3';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['NRP'], 'required'],
            [['NRP'], 'string', 'max' => 15],
            [['ProgramStudi'], 'string', 'max' => 5],
            [['TanggalMasuk', 'TanggalKeluar'], 'string', 'max' => 30],
            [['NRP'], 'exist', 'skipOnError' => true, 'targetClass' => AlumniIntegrasi::className(), 'targetAttribute' => ['NRP' => 'NRP']],
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'Alumnys3ID' => Yii::t('app', 'Alumnys3 ID'),
            'NRP' => Yii::t('app', 'Nrp'),
            'ProgramStudi' => Yii::t('app', 'Program Studi'),
            'TanggalMasuk' => Yii::t('app', 'Tanggal Masuk'),
            'TanggalKeluar' => Yii::t('app', 'Tanggal Keluar'),
            'NamaMahasiswa' => Yii::t('app', 'Nama Mahasiswa'),
        ];
    }

    /**
     * @return \yii\db\ActiveQuery
     */
    public function getalumniIntegrasi()
    {
        return $this->hasOne(alumniIntegrasi::className(), ['NRP' => 'NRP']);
    }

     public function getNamaMahasiswa()
    {
        $alumniIntegrasi = alumniIntegrasi::findOne(['NRP'=> $this->NRP]);
        if (empty($alumniIntegrasi))
            return '';
        return $alumniIntegrasi->NamaMahasiswa;
    }

    /*public function getTanggalMasukText()
    {
        $alumniIntegrasi = alumniIntegrasi::findOne(['NRP'=> $this->NRP]);
        if (empty($alumniIntegrasi))
            return '';
        return $alumniIntegrasi->TanggalMasuk;
    }*/
}

Index codes:

<?php

use yii\helpers\Html;
use yii\grid\GridView;

/* @var $this yii\web\View */
/* @var $searchModel app\models\AlumnyS3Search */
/* @var $dataProvider yii\data\ActiveDataProvider */

$this->title = Yii::t('app', 'Alumny S3s');
$this->params['breadcrumbs'][] = $this->title;
?>
<div class="alumny-s3-index">

    <h1><?= Html::encode($this->title) ?></h1>
    <?php // echo $this->render('_search', ['model' => $searchModel]); ?>

    <p>
        <?= Html::a(Yii::t('app', 'Create Alumny S3'), ['create'], ['class' => 'btn btn-success']) ?>
    </p>
    <?= GridView::widget([
        'dataProvider' => $dataProvider,
        'filterModel' => $searchModel,
        'columns' => [
            ['class' => 'yii\grid\SerialColumn'],

            //'Alumnys3ID',
            'NRP',
            'NamaMahasiswa',
            'ProgramStudi',
            //'tanggalMasukText',
            'TanggalMasuk',
            'TanggalKeluar',

            ['class' => 'yii\grid\ActionColumn'],
        ],
    ]); ?>
</div>

I don't know how to fix that. Could you plese help me to solve this codes? I'm really grateful if you can solve this, thanks!

Add like query in search model like below

<?php

namespace app\models;

use Yii;
use yii\base\Model;
use yii\data\ActiveDataProvider;
use app\models\AlumnyS3;
use app\models\AlumniIntegrasi;
/**
 * AlumnyS3Search represents the model behind the search form about `app\models\AlumnyS3`.
 */
class AlumnyS3Search extends AlumnyS3
{
    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['Alumnys3ID'], 'integer'],
            [['NRP', 'NamaMahasiswa', 'ProgramStudi', 'TanggalMasuk', 'TanggalKeluar'], 'safe'],
        ];
    }
    public $NamaMahasiswa;

    /*public $TanggalMasuk;
    public $tanggalMasukText;*/
    /**
     * @inheritdoc
     */
    public function scenarios()
    {
        // bypass scenarios() implementation in the parent class
        return Model::scenarios();
    }

    /**
     * Creates data provider instance with search query applied
     *
     * @param array $params
     *
     * @return ActiveDataProvider
     */
    public function search($params)
    {
        $query = AlumnyS3::find();
        $query->joinWith('alumniIntegrasi');

        // add conditions that should always apply here

        $dataProvider = new ActiveDataProvider([
            'query' => $query,
        ]);

        $this->load($params);

        if (!$this->validate()) {
            // uncomment the following line if you do not want to return any records when validation fails
            // $query->where('0=1');
            return $dataProvider;
        }

        // grid filtering conditions
        $query->andFilterWhere([
            'Alumnys3ID' => $this->Alumnys3ID,
        ]);



            $query->andFilterWhere([
                'alumnys3.NRP' => $this->NRP,
               // 'alumniintegrasi.NamaMahasiswa' => $this->NamaMahasiswa,
                'alumnys3.ProgramStudi' => $this->ProgramStudi,
                'alumnys3.TanggalMasuk' => $this->TanggalMasuk,
                'alumnys3.TanggaKeluar' => $this->TanggalKeluar

            ]);
               $query->andFilterWhere(['like', 'alumniintegrasi.NamaMahasiswa', $this->NamaMahasiswa]);



        return $dataProvider;
    }
}