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"
"security community issues" » "security companies issues", "city community issues", "minority community issues"
"maps communication iran" » "mass communication iran", "mass communications iran", "lea's communication iran", "maps communication iraq", "maps communication ireland", "maps communication brands"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("security community issues") or ("maps communication iran"))) or ("et cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("security community issues") OR ("maps communication iran"))) OR ("et cooperation history")).
• Removing quotes may allow a broader search: (((( security community issues ) or ( maps communication iran ))) or ( et cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("security community issues") or ("maps communication iran"))) or ("et cooperation history"))*.