Full text search:The query results is not my expectation

Elastic Stack Elasticsearch
1

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

There isn't any doc'content contains "2011款" ,but I got result and it is "2004款". as following:
{
"took":17,
"timed_out":false,
"_shards":{
"total":5,
"successful":5,
"failed":0
},
"hits":{
"total":36,
"max_score":0.55629134,
"hits":[
{
"_index":"xc",
"_type":"modelpbs",
"_id":"99",
"_score":0.55629134,
"_source":{
"brandEname":"aerfaluomiou",
"brandId":1002,
"brandName":"阿尔法·罗密欧",
"dischargeStandardGroupId":1353,
"gearType":2,
"guidePrice":46.8,
"id":99,
"isRecommendHot":0,
"isRecommendIndex":0,
"levelGroupId":106,
"modelId":10885,
"modelName":"2004款 2.0 自动",
"productLine":3,
"releaseTime":"2016-08-24 13:37:46",
"seriesEname":"156",
"seriesId":1042,
"seriesName":"156",
"status":2
}
}
]
}
}

Thanks for your kind help!!

2

these fields should be set "analyzed"

{
       "index":"analyzed"
}
3

Thanks for your answer. I add ik analyzer to query,and it's ok.
{
"analyzer":"ik_smart"
}