Perhaps you should try some spelling variations:
"its colonization history" » "its communication history", "its organization history", "its civilization history", "anti colonization history", "jews colonization history", "mars colonization history"
"city cooperation history" » "city corporation history", "city federation history", "china cooperation history", "city corporations history"
"et cooperation still" » "et cooperation scale", "et cooperation state", "et cooperation studies", "et cooperations still", "eu cooperation still", "2 cooperation still"

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