Perhaps you should try some spelling variations:
"jews cooperation studies" » "jews cooperation series", "jews cooperation sources", "jews cooperation implies", "de cooperation studies", "et cooperation studies", "eu cooperation studies"
"its communication iraq" » "its communication iran", "its communication israel", "its communication italy", "nets communication iraq", "c's communication iraq", "mass communication iraq"
"its federation history" » "its migration history", "les federations history", "_ federation history", "3 federation history"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("its communication iraq") or ("jews cooperation studies"))) or ("its federation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("its communication iraq") OR ("jews cooperation studies"))) OR ("its federation history"))*.
• Removing quotes may allow a broader search: (((( its communication iraq ) or ( jews cooperation studies ))) or ( its federation history ))*.