Perhaps you should try some spelling variations:
communication conversation » communication information, communication communication, communication foundation
communication cohesion » communication collections, communication control, communication cost
data decision » a decision
decision need » decision based, decision field, decision aided

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication conversation) OR (communication cohesion)) data decision need wave~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((communication conversation) OR (communication cohesion)) data decision need wave".
• Adding a wildcard symbol may retrieve word variants: ((communication conversation) OR (communication cohesion)) data decision need wave*.