Perhaps you should try some spelling variations:
"_ colonization failed" » "_ colonization still", "_ organizations failed", "_ decolonization failed", "decolonization _ failed"
"re cooperation still" » "re cooperation scale", "re cooperation studies", "re cooperation series", "de cooperation still", "area cooperation still", "rate cooperation still"
"early cooperation state" » "early operation state", "early cooperative state", "energy cooperation state", "early cooperation scale", "early cooperation strategy"

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 cooperation still") or ((("early cooperation state") or ("_ colonization failed"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("re cooperation still") OR ((("early cooperation state") OR ("_ colonization failed")))).
• Removing quotes may allow a broader search: (( re cooperation still ) or ((( early cooperation state ) or ( _ colonization failed )))).
• Adding a wildcard symbol may retrieve word variants: (("re cooperation still") or ((("early cooperation state") or ("_ colonization failed"))))*.