Perhaps you should try some spelling variations:
associate director » associated vector
associate editor » associate editors, associated vector, associated factor
associated pairs » associated pain, associated pastors, associated plants
associate factor » associated factors, associated vector, associate editors

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 pairs))) OR (associate director))) OR (associate factor)).
• Adding a wildcard symbol may retrieve word variants: ((((((associate editor) or (associated pairs))) or (associate director))) or (associate factor))*.