Perhaps you should try some spelling variations:
"re decolonization africa" » "re democratization africa", "re colonization africa", "box decolonization africa", "war decolonization africa"
"_ decolonization israel" » "_ colonization israel", "_ decolonization islam", "_ decolonization across", "decolonization _ israel"
"pro cooperation history" » "pro corporation history", "pro federation history", "group cooperation history", "area cooperation history", "arab cooperation 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 ("_ decolonization israel"))) or ("pro cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("re decolonization africa") OR ("_ decolonization israel"))) OR ("pro cooperation history"))*.
• Removing quotes may allow a broader search: (((( re decolonization africa ) or ( _ decolonization israel ))) or ( pro cooperation history ))*.