Perhaps you should try some spelling variations:
"ngo communication issues" » "ngo community issues", "ngo communication india", "ngo communication united", "togo communications issues", "de communication issues", "3 communication issues"
"early comparative studies" » "early comparative study", "early cooperative studies", "el comparative studies", "italy comparative studies"
"its colonization failed" » "its colonization still", "its organizations failed", "anti colonization failed", "jews colonization failed", "mars colonization failed"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("ngo communication issues") OR ((("early comparative studies") OR ("its colonization failed"))))~.
• Removing quotes may allow a broader search: (( ngo communication issues ) or ((( early comparative studies ) or ( its colonization failed ))))~.
• Adding a wildcard symbol may retrieve word variants: (("ngo communication issues") or ((("early comparative studies") or ("its colonization failed"))))*.