Perhaps you should try some spelling variations:
"its cooperation history" » "its corporation history", "its federation history", "et cooperation history", "its operation history"
"its colonization failed" » "its colonization still", "its organizations failed", "anti colonization failed", "jews colonization failed", "mars colonization failed"
"city cooperation series" » "city cooperation theories", "city cooperation sources", "city cooperation studies", "city corporation series", "china cooperation series", "city corporations series"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("its colonization failed") or ("city cooperation series"))) or ("its cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("its colonization failed") OR ("city cooperation series"))) OR ("its cooperation history"))*.
• Removing quotes may allow a broader search: (((( its colonization failed ) or ( city cooperation series ))) or ( its cooperation history ))*.