• operator OR:

  hello | world

• operator NOT:

  hello -world
  hello !world

• field search operator, used for specifying a value a field must have: @ <field name> <value>:

  @title hello @body world

• multiple-field search operator:

  @(title,body) hello world

• all-field search operator, to get results where any field matches the value:

  @* hello

• phrase search operator, to get results where the exact phrase occurs :

  "hello world"

• proximity search operator, in the example, a result would match if there are 10 words or less between 'hello' and 'world':

  "hello world"~10

• quorum matching operator: , in the example, a result would match if there are any 3 of the 6 keywords:

  "the world is a wonderful place"/3

• strict order operator, a result would match if the keywords occur in specified order:

  aaa << bbb << ccc

• exact form modifier, disables checking for stemming. In the example, there would be no match for 'catch' which stems from 'cat', as does 'cats':

  raining =cats and =dogs

• field-start and field-end modifier, will make the keyword match only if it occurred at the very start or the very end of a fulltext field, respectively:

  ^hello world$

"hello world" @title "example program"~5 @body python -(php|perl) @* code

The full meaning of this search is: