Perhaps you should try some spelling variations:
associated factors » associated bacteria
associate director » associated vector
associated factor » associated vector, associated pastors, associated vectors
associate factor » associated vector, associate editors
associated fatty » associated fauna, associated states, associated fungi

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((associated factor) OR (associated factors))) OR (associate director))) OR (((associate factor) OR (associated fatty)))).
• Adding a wildcard symbol may retrieve word variants: ((((((associated factor) or (associated factors))) or (associate director))) or (((associate factor) or (associated fatty))))*.