Perhaps you should try some spelling variations:
communication cohesion » communication collections, communication control, communication cost
values kernels » volumes kernel
values levels » varies levels, values letters, values leads
a dimensions » _ dimensions, 2 dimensions, 3 dimensions
cohesion a » cohesion _

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 a dimensions ((values levels) or (values kernels))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication cohesion a dimensions ((values levels) OR (values kernels)).
• Adding a wildcard symbol may retrieve word variants: communication cohesion a dimensions ((values levels) or (values kernels))*.