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

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