Perhaps you should try some spelling variations:
"box decolonization africa" » "box democratization africa", "_ decolonization africa", "war decolonization africa", "1945 decolonization africa"
"_ communication israel" » "_ communication issues", "_ communication iran", "_ communication iraq"
"re colonization history" » "re communication history", "re organization history", "re cooperation history", "pro colonization history", "_ colonization history", "jews colonization history"

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