Perhaps you should try some spelling variations:
"re colonization failed" » "re colonization still", "re organizations failed", "pro colonization failed", "_ colonization failed", "jews colonization failed"
"pro cooperation still" » "pro cooperation scale", "pro cooperation state", "pro cooperation studies", "group cooperation still", "area cooperation still", "arab cooperation still"
"energy generation rate" » "energy conservation rate", "energy generation rates"

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: (("pro cooperation still") OR ((("energy generation rate") OR ("re colonization failed"))))~.
• Removing quotes may allow a broader search: (( pro cooperation still ) or ((( energy generation rate ) or ( re colonization failed ))))~.
• Adding a wildcard symbol may retrieve word variants: (("pro cooperation still") or ((("energy generation rate") or ("re colonization failed"))))*.