Do not use AND or OR to combine words, simply type a few words or phrases.
To find a bed-time story: "fairy tale" +frog -dragon
Example: wooden boat
Finds records that contain either "wooden" or "boat" or both.
Example: the wooden boat
Finds records that contain either "wooden" or "boat" or both; it ignores the word "the."
Example: wooden - boat
Finds records that contain "wooden" but not "boat."