Perhaps you should try some spelling variations:
communication cohesion » communication collections, communication control, communication apprehension
communication cost » communication cross, communication case, communication control
dimensions cohen » dimensional cohen, extensions cohen, dimensions current
data dimensions » data dimension, data dimensional, dark dimensions
cohen file » cohen male

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication cohesion) or (communication cost)) data dimensions cohen file~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((communication cohesion) OR (communication cost)) data dimensions cohen file.
• Adding a wildcard symbol may retrieve word variants: ((communication cohesion) or (communication cost)) data dimensions cohen file*.