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"
"its communication iraq" » "its communication iran", "its communication israel", "its communication italy", "nets communication iraq", "c's communication iraq", "mass communication iraq"
"needs community issues" » "fields community issues", "trends community issues", "des community issues"

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: (((("its communication iraq") OR ("needs community issues"))) OR ("et cooperations history"))~.
• Removing quotes may allow a broader search: (((( its communication iraq ) or ( needs community issues ))) or ( et cooperations history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("its communication iraq") or ("needs community issues"))) or ("et cooperations history"))*.