Perhaps you should try some spelling variations:
"et cooperations history" » "et cooperation history", "et corporations history", "et operaciones history", "et cooperatives history", "eu cooperation history"
"mass communication israel" » "mass communication issues", "mass communication iran", "mass telecommunication israel", "maps communication israel"
"c's communication iraq" » "c's communication iran", "c's communication italy", "c's communication ideas", "lea's communication iraq", "class communication iraq", "les communications iraq"

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

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