Perhaps you should try some spelling variations:
practice communication » politics communication, public communication, pacific communications
businessman political » business politics
businessmen political » business politics, businessmen social
policy communication » politics communication, public communication, applied communication
business political » business politics, business periodicals

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((( business ((practice communication) OR (effective communication)) ) OR ((( businessman political communication ) OR ( business policy communication ))))) OR ( ((business political) OR (businessmen political)) communication ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( business ((practice communication) OR (effective communication)) ) or ((( businessman political communication ) or ( business policy communication ))))) or ( ((business political) or (businessmen political)) communication ))~".
• Adding a wildcard symbol may retrieve word variants: (((( business ((practice communication) OR (effective communication)) ) or ((( businessman political communication ) or ( business policy communication ))))) or ( ((business political) or (businessmen political)) communication ))*.