Perhaps you should try some spelling variations:
"re decolonization across" » "re decolonization africa", "re decolonization case", "re decolonization from", "re colonization across", "box decolonization across", "war decolonization across"
"re communication history" » "re telecommunication history", "re communication sector", "re communication theory", "de communication history", "true communication history", "une communication history"
"_ decolonization still" » "_ colonization still", "_ decolonization africa", "_ decolonization models", "decolonization _ still"

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: "((((\"re decolonization across\") OR (\"_ decolonization still\"))) OR (\"re communication history\"))~".
• Removing quotes may allow a broader search: (((( re decolonization across ) OR ( _ decolonization still ))) OR ( re communication history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("re decolonization across") OR ("_ decolonization still"))) OR ("re communication history"))*.