Perhaps you should try some spelling variations:
"class communication israel" » "class communication issues", "class communication iran", "class telecommunication israel", "mass communication israel", "plans communication israel", "crisis communication israel"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"
"nets communication iraq" » "lea's communication iraq", "mass communication iraq", "c's communication iraq", "nets communication iran", "nets communication italy", "nets communication ideas"

Try widening your search to All Fields.

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

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