Perhaps you should try some spelling variations:
communication cohesion » communication collections, communication control, communication cost
based dimension » based dispersion, basic dimensions, based extension
cohesion based » conversion based, collision based, corrosion based
age rivera » de rivera, g rivera, large rivers
e rivera » _ rivera, m rivera, e ricerca

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 based dimension ((age rivera) or (e rivera))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication cohesion based dimension ((age rivera) OR (e rivera)).
• Adding a wildcard symbol may retrieve word variants: communication cohesion based dimension ((age rivera) or (e rivera))*.