Perhaps you should try some spelling variations:
colonization failed » colonization still, organizations failed
cooperation still » cooperation scale, cooperation studies, cooperation series
early cooperation » early operation, early cooperative, energy cooperation
cooperation state » cooperation scale, operation state, cooperation strategy
mars cooperation » area cooperation, arab cooperation, aid cooperation
_ colonization » _ decolonization, decolonization _

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( mars cooperation still ) or ((( early cooperation state ) or ( _ colonization failed ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( mars cooperation still ) OR ((( early cooperation state ) OR ( _ colonization failed )))).
• Adding a wildcard symbol may retrieve word variants: (( mars cooperation still ) or ((( early cooperation state ) or ( _ colonization failed ))))*.