Perhaps you should try some spelling variations:
"1945 decolonization africa" » "1945 democratization africa", "4.4 decolonisation africa", "box decolonization africa", "war decolonization africa"
"_ decolonization islam" » "_ decolonization from", "_ decolonization _", "_ colonization israel", "decolonization _ islam"
"re colonization history" » "re communication history", "re organization history", "re cooperation history", "pro colonization history", "_ colonization history", "jews colonization history"

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: (((("1945 decolonization africa") OR ("_ decolonization islam"))) OR ("re colonization history"))~.
• Removing quotes may allow a broader search: (((( 1945 decolonization africa ) or ( _ decolonization islam ))) or ( re colonization history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("1945 decolonization africa") or ("_ decolonization islam"))) or ("re colonization history"))*.