Perhaps you should try some spelling variations:
"_ decolonization failed" » "_ colonization failed", "_ decolonization case", "_ decolonization africa", "decolonization _ failed"
"re colonization history" » "re communication history", "re organization history", "re cooperation history", "pro colonization history", "_ colonization history", "jews colonization history"
"early cooperation case" » "early operation case", "early cooperative case", "energy cooperation case", "early cooperation _"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("re colonization history") or ((("early cooperation case") or ("_ decolonization failed"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("re colonization history") OR ((("early cooperation case") OR ("_ decolonization failed")))).
• Removing quotes may allow a broader search: (( re colonization history ) or ((( early cooperation case ) or ( _ decolonization failed )))).
• Adding a wildcard symbol may retrieve word variants: (("re colonization history") or ((("early cooperation case") or ("_ decolonization failed"))))*.