I wonder if it is possible to include operators in the search text, so client can make a boolean query manually.
An example would be: "(first OR second) AND (third OR fourth)"
The following example works with query_string: "this OR another", retrieving the documents which contain one of the two words. But I don't find the way to run the first example, being able to group the words.
Is there a way to run a query with this text?