Perhaps you should try some spelling variations:
"_ colonization history" » "_ communication history", "_ organization history", "_ cooperation history"
"its colonization songs" » "its colonization still", "its colonization work", "its decolonization notes", "anti colonization songs", "jews colonization songs", "mars colonization songs"
"area cooperation still" » "area cooperation scale", "area cooperation state", "area cooperation studies", "asian cooperation still", "border cooperation still", "china 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: (("_ colonization history") or ((("area cooperation still") or ("its colonization songs"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("_ colonization history") OR ((("area cooperation still") OR ("its colonization songs"))))*.
• Removing quotes may allow a broader search: (( _ colonization history ) or ((( area cooperation still ) or ( its colonization songs ))))*.