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