Perhaps you should try some spelling variations:
"_ decolonization failed" » "_ colonization failed", "_ decolonization case", "_ decolonization africa", "decolonization _ failed"
"its cooperation citizen" » "its competition citizen", "its cooperation critical", "its cooperation between", "city cooperation citizen", "et cooperation citizen", "its corporation citizen"
"re colonization work" » "re colonization's mark", "re colonization songs", "re colonization _", "pro colonization work", "_ colonization work", "jews 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 citizen") or ("re colonization work"))) or ("_ decolonization failed"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("its cooperation citizen") OR ("re colonization work"))) OR ("_ decolonization failed"))*.
• Removing quotes may allow a broader search: (((( its cooperation citizen ) or ( re colonization work ))) or ( _ decolonization failed ))*.