Perhaps you should try some spelling variations:
"_ decolonization africa" » "_ democratization africa"
"eu cooperation history" » "eu corporation history", "eu federation history", "et cooperation history", "2 cooperation history", "la cooperation history"
"re organizations fad" » "re organizations a", "re organizations can", "re organizations d.d", "care organizations fad", "era organizations fad", "2 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 ("re organizations fad"))) OR ("eu cooperation history"))~.
• Removing quotes may allow a broader search: (((( _ decolonization africa ) or ( re organizations fad ))) or ( eu cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("_ decolonization africa") or ("re organizations fad"))) or ("eu cooperation history"))*.