Search analyzer score is not matching

[hoangvnit (Hoang Le)]

i have data below

• coconut oil
• liquid coconut oil
• Nutiva Coconut Oil
• Kelapo Coconut Oil
• coconut oil spray

when i searching "coconut oil", i want to the first result is "coconut oil"
but now "liquid coconut oil" have hight score. and result is wrong.
i don't know why.

anyone can help me. thank you so much.

this is my query

GET collection/_search
{
  
  "query": {
    "match": {
      "ingredient": {
        "query": "coconut oil", 
        "operator": "or"
      }
    }
  },
  "sort": [
    {
      "_score": {
        "order": "desc"
      }
    }
  ]
  
}

this is my mapping

PUT collection
{
  "settings": {
    "analysis": {
      "filter": {
        "autocomplete_filter": {
          "type": "edge_ngram",
          "min_gram": 3,
          "max_gram": 7
        }
      },
      "analyzer": {
        "autocomplete": { 
          "type": "custom",
          "tokenizer": "standard",
          "filter": [
            "lowercase",
            "autocomplete_filter"
          ]
        }
      }
    }
  },
  "mappings": {
    "data": {
      "properties": {
        "id" : { "type" : "integer"},
        "ingredient": {
          "type": "text",
          "analyzer": "autocomplete", 
          "search_analyzer": "standard" 
        }
      }
    }
  }
}