Perhaps you should try some spelling variations:
cooperations studies » cooperation studies, cooperation series, cooperation implies
colonization work » colonization's mark, colonization songs, colonization _
pro colonization » bio colonization, re colonization, mars colonization
et cooperations » et cooperation, et cooperatives, eu cooperation

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( et cooperations studies ) or ( pro colonization work ))) or ( decolonization _ failed ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( et cooperations studies ) OR ( pro colonization work ))) OR ( decolonization _ failed )).
• Adding a wildcard symbol may retrieve word variants: (((( et cooperations studies ) or ( pro colonization work ))) or ( decolonization _ failed ))*.