Perhaps you should try some spelling variations:
communication issues » community issues, communication india, communication united
cooperation history » corporation history, federation history
nets communication » lea's communication, mass communication, c's communication
its communication » c's communication, mass communication, les communications
city cooperation » city corporation, china cooperation, city corporations

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( its communication issues ) or ( nets communication issues ))) or ( city cooperation history ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( its communication issues ) OR ( nets communication issues ))) OR ( city cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((( its communication issues ) or ( nets communication issues ))) or ( city cooperation history ))*.