Perhaps you should try some spelling variations:
"businessmen political communication" » "businessman political communication", "business politics communication", "businessmen social communication"
"business crisis communication" » "business crisis communications", "business mass communication", "business written communication", "business cross communication", "business risks communication", "business risk communication"
"business public communication" » "business oral communication", "business world communication"
"business human communication" » "business oral communication", "business mass communication", "business way communication", "business german communication", "business japan communication", "business can communication"
"business political communication" » "business politics communication", "businessman political communication", "business periodicals communication"
"business policy communities" » "business biotic communities", "business police community", "business policy committee"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((((("business political communication") OR ("businessmen political communication"))) or ("business policy communities"))) or ((("business crisis communication") or ("business public communication"))))) or ("business human communication"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((("business political communication") OR ("businessmen political communication"))) OR ("business policy communities"))) OR ((("business crisis communication") OR ("business public communication"))))) OR ("business human communication")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"business political communication\") OR (\"businessmen political communication\"))) or (\"business policy communities\"))) or (((\"business crisis communication\") or (\"business public communication\"))))) or (\"business human communication\"))".
• Removing quotes may allow a broader search: (((((((( business political communication ) OR ( businessmen political communication ))) or ( business policy communities ))) or ((( business crisis communication ) or ( business public communication ))))) or ( business human communication )).
• Adding a wildcard symbol may retrieve word variants: (((((((("business political communication") OR ("businessmen political communication"))) or ("business policy communities"))) or ((("business crisis communication") or ("business public communication"))))) or ("business human communication"))*.