Full text search:The query results is not my expectation

I use the following query to do full-text search:
"query": {
"multi_match": {
"query": "2011款",
"fields": [
"from": 0,
"size": 40

There isn't any doc'content contains "2011款" ,but I got result and it is "2004款". as following:
"modelName":"2004款 2.0 自动",
"releaseTime":"2016-08-24 13:37:46",

Thanks for your kind help!!

these fields should be set "analyzed"


Thanks for your answer. I add ik analyzer to query,and it's ok.