Perhaps you should try some spelling variations:
"re decolonization africa" » "re democratization africa", "_ decolonization africa", "re colonization africa", "box decolonization africa"
"_ civilization history" » "_ globalization history"
"re organization history" » "re organization theory", "re organisation history", "care organization history", "free organization history"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("re decolonization africa") or ("_ civilization history"))) or ("re organization history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("re decolonization africa") OR ("_ civilization history"))) OR ("re organization history"))*.
• Removing quotes may allow a broader search: (((( re decolonization africa ) or ( _ civilization history ))) or ( re organization history ))*.