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