Perhaps you should try some spelling variations:
communications issues » communication issues, communications studies, communications costs
cooperation history » corporation history, federation history
les communications » laos communications, nps communications, u.s communications
its cooperation » city cooperation, et cooperation, its corporation
nets community » needs community, tents community, arts community

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

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