Perhaps you should try some spelling variations:
"its cooperation studies" » "its cooperation series", "its cooperation sources", "its cooperation implies", "city cooperation studies", "et cooperation studies", "its corporation studies"
"pro decolonization case" » "pro decolonization across", "pro decolonization notes", "pro decolonization _", "pro colonization case", "_ decolonization case", "box decolonization case"
"re colonization failed" » "re colonization still", "re organizations failed", "pro colonization failed", "_ colonization failed", "jews colonization failed"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("its cooperation studies") or ("pro decolonization case"))) or ("re colonization failed"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("its cooperation studies") OR ("pro decolonization case"))) OR ("re colonization failed"))*.
• Removing quotes may allow a broader search: (((( its cooperation studies ) or ( pro decolonization case ))) or ( re colonization failed ))*.