Perhaps you should try some spelling variations:
decolonization from » decolonization africa, decolonization across, decolonization islam
decolonisation from » decolonisation _, decolonisation 1, decolonisation 4.5
cooperation history » corporation history, federation history
re decolonization » _ decolonization, re colonization, box decolonization
_ decolonisation » _ decolonization, _ decarbonization
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 from ))) OR ( re cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((( re decolonization from ) or ( _ decolonisation from ))) or ( re cooperation history ))*.