Perhaps you should try some spelling variations:
"its cooperation history" » "its corporation history", "its federation history", "city cooperation history", "et cooperation history"
"c's communication iraq" » "c's communication iran", "c's communication israel", "c's communication italy", "lea's communication iraq", "class communication iraq", "mass communication iraq"
"jews colonization songs" » "jews colonization still", "jews colonization work", "jews decolonization notes", "its colonization songs", "mars colonization songs", "re colonization songs"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("c's communication iraq") or ("jews colonization songs"))) or ("its cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("c's communication iraq") OR ("jews colonization songs"))) OR ("its cooperation history")).
• Removing quotes may allow a broader search: (((( c's communication iraq ) or ( jews colonization songs ))) or ( its cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("c's communication iraq") or ("jews colonization songs"))) or ("its cooperation history"))*.