Perhaps you should try some spelling variations:
"mass communication issues" » "mass community issues", "mass communication india", "mass communication united", "maps communication issues"
"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", "c's communication iran", "les communications iran", "nets communication iraq", "nets communication ireland", "nets 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: (((("mass communication issues") or ("nets communication iran"))) or ("et cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mass communication issues") OR ("nets communication iran"))) OR ("et cooperation history")).
• Removing quotes may allow a broader search: (((( mass communication issues ) or ( nets communication iran ))) or ( et cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("mass communication issues") or ("nets communication iran"))) or ("et cooperation history"))*.