Perhaps you should try some spelling variations:
"mass communication issues" » "mass community issues", "mass communication india", "mass communication united", "maps communication issues"
"_ colonization still" » "_ colonization failed", "_ colonization israel", "_ colonization songs", "_ decolonization still", "decolonization _ still"
"re cooperation scale" » "re cooperation case", "re cooperation state", "re cooperation sara", "de cooperation scale", "area cooperation scale", "rate cooperation scale"

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 ("re cooperation scale"))) or ("_ colonization still"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mass communication issues") OR ("re cooperation scale"))) OR ("_ colonization still"))*.
• Removing quotes may allow a broader search: (((( mass communication issues ) or ( re cooperation scale ))) or ( _ colonization still ))*.