Perhaps you should try some spelling variations:
associated factors » associated bacteria
associate editors » associated operators
associated vector » associate director, associated secretory, associated infection
associate editor » associate factor, associate director, associated factor

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: ((((associate editor) OR (associate editors))) OR (((associated factors) OR (associated vector)))).
• Adding a wildcard symbol may retrieve word variants: ((((associate editor) or (associate editors))) or (((associated factors) or (associated vector))))*.