Perhaps you should try some spelling variations:
"its decolonization across" » "its decolonization africa", "its decolonization case", "its decolonization from", "its colonization across", "_ decolonization across", "box decolonization across"
"its cooperation history" » "its corporation history", "its federation history", "city cooperation history", "et cooperation history"
"mars colonization still" » "mars colonization failed", "mars colonization israel", "mars colonization songs", "mrsa colonization still", "its colonization still", "jews colonization 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 decolonization across") or ("mars colonization still"))) or ("its cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("its decolonization across") OR ("mars colonization still"))) OR ("its cooperation history")).
• Removing quotes may allow a broader search: (((( its decolonization across ) or ( mars colonization still ))) or ( its cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("its decolonization across") or ("mars colonization still"))) or ("its cooperation history"))*.