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 cooperative studies" » "early comparative studies", "early cooperation studies", "early cooperative strategies", "early postoperative studies", "dairy cooperative studies"
"_ colonization still" » "_ colonization failed", "_ colonization israel", "_ colonization songs", "_ decolonization still", "decolonization _ still"

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 cooperative studies") OR ("_ colonization still"))))~.
• Removing quotes may allow a broader search: (( ngo communication issues ) or ((( early cooperative studies ) or ( _ colonization still ))))~.
• Adding a wildcard symbol may retrieve word variants: (("ngo communication issues") or ((("early cooperative studies") or ("_ colonization still"))))*.