gistfile1.txt

POST /test/product/_search
{
    "query": {
        "function_score": {
          "query": { "match": { "name" : "การ์ดแสดงผล"} },
          "functions": [
            {
                "filter": { "match": { "name": "ASUS" } },
                "weight": 3
            },
            {
                "filter": { "match": { "name": "MSI" } },
                "weight": 5
            }
          ]
        }
    }
}

PUT test
{
    "settings": {
        "analysis": {
            "analyzer": {
                "trigrams": {
                    "tokenizer": "trigram_tokenizer",
                    "filter":   [
                        "lowercase"
                    ]
                }
            },
            "tokenizer": {
                "trigram_tokenizer": {
                    "type": "ngram",
                    "min_gram": 3,
                    "max_gram": 3,
                    "token_chars": []
                }
            }
        }
    },
    "mappings": {
        "product": {
            "properties": {
                "name": {
                  "type":     "text",
                  "analyzer": "trigrams" 
                },
                "cost" :{
                  "type": "integer"
                }
            }
        }
    }
}

POST _bulk
{ "index"   : { "_index" : "test", "_type" : "product", "_id" : "1" } }
{"name" : "VGA (การ์ดแสดงผล) ASUS CERBERUS GTX1070TI A8G", "cost":2300}
{ "index"   : { "_index" : "test", "_type" : "product", "_id" : "2" } }
{"name" : "VGA (การ์ดแสดงผล) INNO3D GTX 1070 Ti X2 V2 8GB ( N107T-2SDN-P5DS )",  "cost":2500}
{ "index"  : { "_index" : "test", "_type" : "product", "_id" : "3" } }
{"name" : "VGA (การ์ดแสดงผล) MSI GTX 1080 Ti ARMOR 11G OC", "cost":2700}