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