Perhaps you should try some spelling variations:
cooperation history » corporation history, federation history
decolonization from » decolonisation from, decolonization africa, decolonization across
re decolonization » _ decolonization, re colonization, box decolonization
_ decolonisation » _ decolonization, _ decarbonization
decolonisation 1 » decolonisation _, decolonisations _, decolonization _
re cooperation » de cooperation, area cooperation, rate cooperation

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((( re decolonization from ) OR ( _ decolonisation 1 ))) OR ( re cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((( re decolonization from ) or ( _ decolonisation 1 ))) or ( re cooperation history ))*.