Perhaps you should try some spelling variations:
"re decolonization islam" » "re decolonization from", "re decolonization _", "re colonization israel", "_ decolonization islam", "re colonization islam", "box decolonization islam"
"_ colonization history" » "_ communication history", "_ organization history", "_ cooperation history", "_ decolonization history", "decolonization _ history"
"de communication sector" » "de telecommunication sector", "de telecommunications sector", "de communication series", "mobile communication sector", "online communication sector"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("re decolonization islam") or ("_ colonization history"))) or ("de communication sector"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("re decolonization islam") OR ("_ colonization history"))) OR ("de communication sector"))*.
• Removing quotes may allow a broader search: (((( re decolonization islam ) or ( _ colonization history ))) or ( de communication sector ))*.