Perhaps you should try some spelling variations:
"its cooperation history" » "its corporation history", "its federation history", "city cooperation history", "et cooperation history"
"its decolonisation 1" » "_ decolonisation 1", "4.4 decolonisation 1", "its colonization 1", "its decolonisation _", "its decolonisations _", "its decolonization _"
"_ colonization songs" » "_ colonization still", "_ colonization work", "_ decolonization notes", "_ decolonization songs", "decolonization _ songs"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("its decolonisation 1") OR ("_ colonization songs"))) OR ("its cooperation history"))~.
• Removing quotes may allow a broader search: (((( its decolonisation 1 ) or ( _ colonization songs ))) or ( its cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("its decolonisation 1") or ("_ colonization songs"))) or ("its cooperation history"))*.