elasticsearch容错，拼音，模糊搜索的问题

es配置里用了combo插件，合并ik+pinyin分词器，但是搜索效果不太准确，当我搜索关键词"国邦"时，它会先匹配"郭邦耀",然后才是*国邦*文档，求大神指点
配置文件:

index:
  analysis:
    analyzer:
      ik_max_word:
          type: ik
          use_smart: false
      ik_smart:
          type: ik
          use_smart: true
      pinyin:
        type: custom
        tokenizer: standard
        filter:
         - standard
         - pinyin_filter
         - lowercase
      combo:
        type: combo
        sub_analyzers:
         - ik
         - pinyin
    filter:
      pinyin_filter :
        type : pinyin
        first_letter : none
        padding_char : ' '

 这里是mapping设置:
 curl -XPOST http://localhost:9200/website/blog/_mapping -d'
{
    "blog": {
        "properties": {
            "name": {
                "type": "string",
                "store": "yes",
                "analyzer": "combo",
                "searchAnalyzer": "combo"
            },
            "description": {
                "type": "string",
                "store": "yes",
                "analyzer": "combo",
                "searchAnalyzer": "combo"
            }
        }
    }
}'

http://www.chawenti.com/articles/16928.html