Perhaps you should try some spelling variations:
"_ decolonization failed" » "_ colonization failed", "_ decolonization case", "_ decolonization africa", "decolonization _ failed"
"re communication sector" » "re telecommunication sector", "re telecommunications sector", "re communication series", "de communication sector", "true communication sector", "une communication sector"
"war decolonization from" » "war decolonisation from", "war decolonization africa", "war decolonization across", "box decolonization from", "1945 decolonization from", "_ decolonisation from"

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: "((((\"war decolonization from\") OR (\"_ decolonization failed\"))) OR (\"re communication sector\"))~".
• Removing quotes may allow a broader search: (((( war decolonization from ) OR ( _ decolonization failed ))) OR ( re communication sector ))~.
• Adding a wildcard symbol may retrieve word variants: (((("war decolonization from") OR ("_ decolonization failed"))) OR ("re communication sector"))*.