Perhaps you should try some spelling variations:
"mass communication issues" » "mass community issues", "mass communication india", "mass communication united", "maps communication issues"
"_ colonization failed" » "_ colonization still", "_ organizations failed", "_ decolonization failed", "decolonization _ failed"
"trade cooperation scale" » "border cooperation scale", "trade cooperation case", "trade cooperation state", "trade cooperation sara"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("mass communication issues") or ("trade cooperation scale"))) or ("_ colonization failed"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mass communication issues") OR ("trade cooperation scale"))) OR ("_ colonization failed")).
• Removing quotes may allow a broader search: (((( mass communication issues ) or ( trade cooperation scale ))) or ( _ colonization failed )).
• Adding a wildcard symbol may retrieve word variants: (((("mass communication issues") or ("trade cooperation scale"))) or ("_ colonization failed"))*.