Perhaps you should try some spelling variations:
"re decolonization case" » "re decolonization across", "re decolonization notes", "re decolonization _", "_ decolonization case", "re colonization case", "box decolonization case"
"its colonization failed" » "its colonization still", "its organizations failed", "anti colonization failed", "jews colonization failed", "mars colonization failed"
"_ 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"its colonization failed\") OR (((\"_ colonization songs\") OR (\"re decolonization case\"))))~".
• Removing quotes may allow a broader search: (( its colonization failed ) OR ((( _ colonization songs ) OR ( re decolonization case ))))~.
• Adding a wildcard symbol may retrieve word variants: (("its colonization failed") OR ((("_ colonization songs") OR ("re decolonization case"))))*.