Perhaps you should try some spelling variations:
"c's communication israel" » "c's communication issues", "c's communication iran", "c's communication iraq", "lea's communication israel", "class communication israel", "mass communication israel"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"
"de cooperation still" » "de cooperation scale", "de cooperation state", "de cooperation studies", "2 cooperation still", "trade cooperation still", "area cooperation still"

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

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