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

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 (((((associate factor) OR (associate director))) OR (((associated vector) OR (associated infection)))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((associate editor) or (associate editors))) or (((((associate factor) or (associate director))) or (((associated vector) OR (associated infection))))))".
• Adding a wildcard symbol may retrieve word variants: ((((associate editor) or (associate editors))) or (((((associate factor) or (associate director))) or (((associated vector) OR (associated infection))))))*.