Perhaps you should try some spelling variations:
cooperation studies » cooperation series, cooperation sources, cooperation implies
colonization still » colonization failed, colonization israel, cooperation still
colonization songs » colonization work, decolonization notes
re colonization » pro colonization, _ colonization, jews colonization

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

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