Perhaps you should try some spelling variations:
mobile communication » risk communication
today communications » radar communication, optical communications, _ communications
optic communication » optical communications, political communication
aided communication » risk communication
oral communication » radar communication, _ communication, risk communication
grid communication » risk communication, radar communication, _ communication

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( fiber-((optic communication) OR (oral communication)) ) or ( fiber-((grid communication) or (((today communications) or (((mobile communication) or (aided communication)))))) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( fiber-((optic communication) OR (oral communication)) ) OR ( fiber-((grid communication) OR (((today communications) OR (((mobile communication) OR (aided communication)))))) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( fiber-((optic communication) OR (oral communication)) ) or ( fiber-((grid communication) or (((today communications) or (((mobile communication) or (aided communication)))))) ))".
• Adding a wildcard symbol may retrieve word variants: (( fiber-((optic communication) OR (oral communication)) ) or ( fiber-((grid communication) or (((today communications) or (((mobile communication) or (aided communication)))))) ))*.