Perhaps you should try some spelling variations:
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"
"nets communication iran" » "lea's communication iran", "mass communication iran", "c's communication iran", "nets communication iraq", "nets communication ireland", "nets communication brands"
"icts community issues" » "its community issues", "facts community issues", "arts community issues"

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: (((("icts community issues") OR ("nets communication iran"))) OR ("et cooperation history"))~.
• Removing quotes may allow a broader search: (((( icts community issues ) or ( nets communication iran ))) or ( et cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("icts community issues") or ("nets communication iran"))) or ("et cooperation history"))*.