Multiple search term on multiple field using wild card

Elastic Stack Elasticsearch
1

I have working search for single search on multiple fields and wildcard(using ngram).
Index creation(s-search index):

{
  "settings": {
    "number_of_shards": 2,
    "number_of_replicas": 1,
    "index.mapping.coerce": false,
    "analysis": {
      "filter": {
        "ngram_filter": {
          "type": "ngram",
          "min_gram": 3,
          "max_gram": 3
        }
      },
      "analyzer": {
        "ngram_tokenizer_analyzer": {
          "type": "custom",
          "tokenizer": "standard",
          "filter": [
            "lowercase",
            "ngram_filter"
          ]
        }
      }
    }
  },
  "mappings": {
    "dynamic": "strict",
    "properties": {
      "sName": {
        "type": "text",
        "analyzer": "ngram_tokenizer_analyzer",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      },
      "source": {
        "type": "text",
        "analyzer": "ngram_tokenizer_analyzer",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      },
      "description": {
        "type": "text",
        "analyzer": "ngram_tokenizer_analyzer",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      },
      "containerType": {
        "type": "text",
        "analyzer": "ngram_tokenizer_analyzer",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      },
      "comments": {
        "type": "text",
        "analyzer": "ngram_tokenizer_analyzer",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      }
    }
  }
}

Here's the query(spring generated):

{
  "multi_match" : {
    "query" : "str1",
    "fields" : [
      "comments^1.0",
      "containerType^1.0"
      "description^1.0",
      "sName^1.0",
      "source^1.0"
    ],
    "type" : "best_fields",
    "operator" : "OR",
    "slop" : 0,
    "prefix_length" : 0,
    "max_expansions" : 50,
    "zero_terms_query" : "NONE",
    "auto_generate_synonyms_phrase_query" : true,
    "fuzzy_transpositions" : true,
    "boost" : 1.0x
  }
}

it is working fine.
now I want to search multiple terms(with AND clause, both terms should be available in document) on same multi-fields(wildcard using ngram)
Any suggestion/guidance to achieve this?
I am trying to use bool but didn't get success yet.

2

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