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"
"nets communication iraq" » "lea's communication iraq", "mass communication iraq", "c's communication iraq", "nets communication iran", "nets communication israel", "nets communication italy"
"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.

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