Perhaps you should try some spelling variations:
"_ decolonization africa" » "_ democratization africa"
"la cooperation history" » "la corporation history", "la federation history", "2 cooperation history", "gulf cooperation history", "area cooperation history"
"2 organizations fad" » "2 organizations a", "2 organizations can", "2 organizations d.d", "2 organization fad", "d organizations fad", "g organizations fad"

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: (((("_ decolonization africa") OR ("2 organizations fad"))) OR ("la cooperation history"))~.
• Removing quotes may allow a broader search: (((( _ decolonization africa ) or ( 2 organizations fad ))) or ( la cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("_ decolonization africa") or ("2 organizations fad"))) or ("la cooperation history"))*.