lucene - Elasticsearch how to query a multi-valued field with "shorter is better" scoring? -

i have multi-valued field favsports (not analyzed) in elasticsearch index:

{"name":"mike","favsports":["soccer","tennis"],...} {"name":"joe","favsports":["soccer","tennis","basketball"],...} 

i want write query find persons both soccer , tennis, query:

"query": {   "bool": {     "must": [       {   "term": {              "favsports": "soccer"            }       },       {   "term": {              "favsports": "tennis"            }       }     ],     "must": {        "query_string": {         .....(other query criteria)       }     }   } }  

in query above, score of "favsports":"soccer/tennis" same mike , joe.

i want write query mike has higher score joe because mike exact match soccer/tennis while joe have additional basketball, how can write such query?

another question: if want "soccer" , "tennis" (if sport other soccer , tennis, won't included in query result) how write query?

writing function query this.

"script_score": {       "script": {         "file": "countreciprocal",// 1/doc[field].values.size()         "params": {           "field": "favsports"         }       }     }