Perhaps you should try some spelling variations:
today communications » radar communication, optical communications, aided communication
mobile communication » aided communication
optic communication » optical communications, grid communication, political communication
oral communication » grid communication, radar communication, _ communication
risk communication » aided 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-((risk communication) or (((today communications) or (mobile communication)))) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( fiber-((optic communication) OR (oral communication)) ) OR ( fiber-((risk communication) OR (((today communications) OR (mobile communication)))) )).
• Adding a wildcard symbol may retrieve word variants: (( fiber-((optic communication) or (oral communication)) ) or ( fiber-((risk communication) or (((today communications) or (mobile communication)))) ))*.