Perhaps you should try some spelling variations:
associated vector » associated factors, associated secretory, associated infection
associate editors » associated factors, 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 (associated vector))) OR (((associate editor) OR (associated vector))s))) OR (associate director))) OR (((associate factor) OR (associate editors)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((associate editor) or (associated vector))) or (((associate editor) or (associated vector))s))) or (associate director))) or (((associate factor) OR (associate editors))))".
• Adding a wildcard symbol may retrieve word variants: ((((((((associate editor) or (associated vector))) or (((associate editor) or (associated vector))s))) or (associate director))) or (((associate factor) OR (associate editors))))*.