Perhaps you should try some spelling variations:
"c's communication issues" » "c's community issues", "c's communication india", "c's communication united", "lea's communication issues", "class communication issues", "mass communication issues"
"city cooperation history" » "city corporation history", "city federation history", "china cooperation history", "city corporations history"
"jews colonization still" » "jews colonization failed", "jews colonization israel", "jews colonization songs", "its colonization still", "mars colonization still", "re colonization still"

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 issues") or ("jews colonization still"))) or ("city cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("c's communication issues") OR ("jews colonization still"))) OR ("city cooperation history")).
• Removing quotes may allow a broader search: (((( c's communication issues ) or ( jews colonization still ))) or ( city cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("c's communication issues") or ("jews colonization still"))) or ("city cooperation history"))*.