Perhaps you should try some spelling variations:
associated factorss » associated factor, associated fractures, associated pastors
associate director » associated vector
associated factors » associated bacteria
associate factor » associated vector, 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 director) OR (associated factorss))) OR (((associate factor) OR (associated factors)))).
• Adding a wildcard symbol may retrieve word variants: ((((associate director) or (associated factorss))) or (((associate factor) or (associated factors))))*.