Perhaps you should try some spelling variations:
"c's communication israel" » "c's communication iran", "c's communication iraq", "c's telecommunication israel", "lea's communication israel", "class communication israel", "mass communication israel"
"nets communication issues" » "nets community issues", "nets communication india", "nets communication united", "lea's communication issues", "mass communication issues", "les communications issues"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"

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