Perhaps you should try some spelling variations:
"_ colonization failed" » "_ colonization still", "_ organizations failed", "_ decolonization failed", "decolonization _ failed"
"its cooperation studies" » "its cooperation series", "its cooperation sources", "its cooperation implies", "city cooperation studies", "et cooperation studies", "its corporation studies"
"pro colonization work" » "pro colonization's mark", "pro colonization songs", "pro colonization _", "bio colonization work", "re colonization work", "mars colonization work"

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 colonization work"))) or ("_ colonization failed"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("its cooperation studies") OR ("pro colonization work"))) OR ("_ colonization failed"))*.
• Removing quotes may allow a broader search: (((( its cooperation studies ) or ( pro colonization work ))) or ( _ colonization failed ))*.