Perhaps you should try some spelling variations:
"its cooperation history" » "its corporation history", "its federation history", "city cooperation history", "et cooperation history"
"its colonization songs" » "its colonization still", "its colonization work", "its decolonization notes", "anti colonization songs", "jews colonization songs", "mars colonization songs"
"china cooperation still" » "asian cooperation still", "regional cooperation still", "china cooperation scale", "china cooperation state", "china cooperation studies"

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