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 iran" » "mass communication iraq", "mass communication ireland", "mass communication brands", "maps communication iran"
"its community issues" » "icts community issues", "city 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: (((("its community issues") OR ("mass communication iran"))) OR ("eu cooperation history"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"its community issues\") OR (\"mass communication iran\"))) OR (\"eu cooperation history\"))".
• Removing quotes may allow a broader search: (((( its community issues ) OR ( mass communication iran ))) OR ( eu cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("its community issues") OR ("mass communication iran"))) OR ("eu cooperation history"))*.