Perhaps you should try some spelling variations:
"eu cooperation history" » "eu corporation history", "eu federation history", "et cooperation history", "2 cooperation history", "la cooperation history"
"mass communication iraq" » "mass communication iran", "mass communication israel", "mass communication italy", "maps communication iraq"
"nets community issues" » "needs community issues", "tents community issues", "arts community issues"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("mass communication iraq") OR ("nets community issues"))) OR ("eu cooperation history"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mass communication iraq\") OR (\"nets community issues\"))) OR (\"eu cooperation history\"))".
• Removing quotes may allow a broader search: (((( mass communication iraq ) OR ( nets community issues ))) OR ( eu cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("mass communication iraq") OR ("nets community issues"))) OR ("eu cooperation history"))*.