Perhaps you should try some spelling variations:
communication cohesion » communication collections, communication control, communication cost
regression crest » regression test, regression cross, regression forests
regression case » regression based, regression a, regression chapter
regression age » regression agent, regression arem, regression face
cohesion from » adhesion from, conversion from, corrosion from

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