Perhaps you should try some spelling variations:
"mars colonization israel" » "mars communication israel", "mars colonization still", "mars colonization history", "mrsa colonization israel", "its colonization israel", "jews colonization israel"
"_ colonization failed" » "_ colonization still", "_ organizations failed", "_ decolonization failed", "decolonization _ failed"
"early cooperation state" » "early operation state", "early cooperative state", "energy cooperation state", "early cooperation scale", "early cooperation strategy"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"mars colonization israel\") OR (((\"early cooperation state\") OR (\"_ colonization failed\"))))~".
• Removing quotes may allow a broader search: (( mars colonization israel ) OR ((( early cooperation state ) OR ( _ colonization failed ))))~.
• Adding a wildcard symbol may retrieve word variants: (("mars colonization israel") OR ((("early cooperation state") OR ("_ colonization failed"))))*.