Elasticsearch the query syntax - Boolean (bool) filter is simple to use

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1, the concept of

BOOL (Boolean) filter. This is a complex filter (compound filter), it can accept a plurality of additional filters as parameters, and combined into a variety of Boolean (logical) a combination of these filters. 
Format 
a bool filter consists of three parts:

{
   "bool" : {
      "must" :     [],
      "should" :   [],
      "must_not" : [],
   }
}

must 
all statements must (must) match, and AND equivalence. 
must_not 
all the statements can not (must not) match, and NOT equivalent. 
You should 
have to match at least one statement, the OR equivalent.

2, combat

Query title: chrome or firefox data is: Should there be at least one default match the following example:

{
  "bool": {
    "should": [
      { "term": { "title": "chrome" }},
      { "term": { "title": "firefox"   }}
    ]
  }
}

Query title: a chrome or firefox or safari of data: Because only three statements, the query term parameter  minimum_should_match value will be truncated to 75 percent  2 . I.e., three  should statements must match at least the following two cases:

{
  "bool": {
    "should": [
      { "term": { "title": "chrome" }},
      { "term": { "title": "firefox"   }},
      { "term": { "title": "safari" }}
    ],
    "minimum_should_match": 2 
  }
}

Query title: there must be both chrome firefox, strong query in the following example:

{
  "bool": {
    "must": [
      { "term": { "title": "chrome" }},
      { "term": { "title": "firefox"   }}
    ]
  }
}

Query title: chrome must not contain strong query following example:

{
  "bool": {
    "must_not": [
      { "term": { "title": "chrome"}}
    ]
  }
}

Reference section from:

Elasticsearch: Boolean (bool) filter --AND, OR, NOT query, query a plurality of fields

Elasticsearch how to use bool match