Perhaps you should try some spelling variations:
communication applications » communication education, education applications
communication control » communication concepts, communication culture, communication channel
decision manure » precision manure, decision makers, decision maker
model decision » models decision, mode decision, modern decision
manure routing » aware routing, secure routing, manet routing

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication control) OR (communication applications)) model decision manure routing~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((communication control) OR (communication applications)) model decision manure routing".
• Adding a wildcard symbol may retrieve word variants: ((communication control) OR (communication applications)) model decision manure routing*.