Elastic get relevant results - elasticsearch

Question

I have a query that searchs in title, description, author, ean, isbn.
I have boosts for title^3, author^2, ean^100 and isbn^100.
When I get hit with ean it returns only 1 result. (ean is a number)
ISBN is a string eg. 978-12-1234-123-8 and I get thousands of results for ISBN. But if there is hit the one will have marginally higher result then the others.
I'm using multi_match with type best_fields.
Is there a way to get only relevant results? Or I have to do it by myself?
EDIT:
Mappings:
"product": {
"properties": {
"img": {
"type": "string"
},
"dobrovsky_rating": {
"type": "float"
},
"isbn": {
"type": "string"
},
"saleType": {
"type": "string"
},
"rating": {
"type": "float"
},
"description": {
"analyzer": "hunspell_cs",
"type": "string"
},
"availability": {
"type": "string"
},
"priceDph": {
"type": "long"
},
"title": {
"analyzer": "hunspell_cs",
"type": "string"
},
"url": {
"index": "not_analyzed",
"type": "string"
},
"rating_count": {
"type": "long"
},
"ean": {
"type": "string"
},
"serie": {
"analyzer": "hunspell_cs",
"type": "string"
},
"id": {
"type": "long"
},
"category": {
"analyzer": "hunspell_cs",
"type": "string"
},
"authors": {
"analyzer": "hunspell_cs",
"type": "string"
}
}
Data example:
Id: 123
Title: Game of Thrones
Author: George R.R. Martin
Img: www.aaa.cz/got.png
Url: www.aaa.cz/got.html
Description: Game of Thrones is a ...
EAN: 9788071974925
ISBN: 978-80-7197-492-5
...

Answer 1

Try this
POST /MyINdex/_search
{
"from": 0,
"size": 10,
"_source": {
"include": [
"*"
]
},
"query": {
"query_string": {
"query": "978-12-1234-123-8",
"fields": [
"title^3",
"author2^2",
"ean^100",
"isbn^100",
"description^1"
],
"default_operator": "and"
}
}
}