Perhaps you should try some spelling variations:
"re decolonization across" » "re decolonization africa", "re decolonization case", "re decolonization from", "_ decolonization across", "re colonization across", "box decolonization across"
"_ colonization failed" » "_ colonization still", "_ organizations failed", "_ decolonization failed", "decolonization _ failed"
"de cooperation history" » "de corporation history", "de federation history", "2 cooperation history", "trade cooperation history", "area cooperation 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: (((("re decolonization across") OR ("_ colonization failed"))) OR ("de cooperation history"))~.
• Removing quotes may allow a broader search: (((( re decolonization across ) or ( _ colonization failed ))) or ( de cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("re decolonization across") or ("_ colonization failed"))) or ("de cooperation history"))*.