Perhaps you should try some spelling variations:
communication cohesion » communication collections, communication control, communication cost
decision areas » decision aids, decision eclas, decision agent
decision group » decision about
excision from » exclusion from, excitation from, decisions from
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 ((((decision areas) or (decision group))) or (excision from)) river~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication cohesion a ((((decision areas) OR (decision group))) OR (excision from)) river.
• Adding a wildcard symbol may retrieve word variants: communication cohesion a ((((decision areas) or (decision group))) or (excision from)) river*.