Perhaps you should try some spelling variations:
"its cooperation history" » "its corporation history", "its federation history", "city cooperation history", "et 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"
"arts community issues" » "earth community issues", "facts community issues", "als community issues"

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