Perhaps you should try some spelling variations:
"its cooperation history" » "its corporation history", "its federation history", "et cooperation history", "its operation history"
"its colonization still" » "its colonization failed", "its colonization israel", "its colonization songs", "anti colonization still", "jews colonization still", "mars colonization still"
"city cooperation state" » "city cooperation scale", "city operation state", "city cooperation strategy", "city corporation state", "china cooperation state", "city corporations state"

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: (((("its colonization still") OR ("city cooperation state"))) OR ("its cooperation history"))~.
• Removing quotes may allow a broader search: (((( its colonization still ) or ( city cooperation state ))) or ( its cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("its colonization still") or ("city cooperation state"))) or ("its cooperation history"))*.