How can I do a boolean search in the Bentley Communities search bar

How can I do a boolean search in the Bentley Communities search bar


I wish to do something like search for

Apples AND Oranges

        This should return posts that contain both the words  Apples Oranges 

Apples OR Oranges

        This should return posts that contain any of the words Apples Oranges

Apples NOT Oranges

       This should return posts that contain the word Apples but does not contain Oranges