Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication communication
conversation basic » conversations basics, conversacion basica, conversation based
decision aided » decision aid, decision fixed, decision aiding
decision aids » decision aid, decision a

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 basic ((decision aided) OR (decision aids)) wave~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication conversation basic ((decision aided) OR (decision aids)) wave".
• Adding a wildcard symbol may retrieve word variants: communication conversation basic ((decision aided) OR (decision aids)) wave*.