Perhaps you should try some spelling variations:
"mass communication israel" » "mass communication issues", "mass communication iran", "mass communication iraq", "maps communication israel"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"
"mars colonization still" » "mars colonization failed", "mars colonization israel", "mars colonization songs", "mrsa colonization still", "its colonization still", "jews colonization still"

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 israel") or ("mars colonization still"))) or ("et cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mass communication israel") OR ("mars colonization still"))) OR ("et cooperation history")).
• Removing quotes may allow a broader search: (((( mass communication israel ) or ( mars colonization still ))) or ( et cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("mass communication israel") or ("mars colonization still"))) or ("et cooperation history"))*.