Perhaps you should try some spelling variations:
"10 communication issues" » "10 community issues", "10 communication india", "10 communication united", "1 communication issues", "3 communication issues", "4 communication issues"
"re colonization history" » "re communication history", "re organization history", "re cooperation history", "pro colonization history", "_ colonization history", "jews colonization history"
"de communication theory" » "de communication technology", "mobile communication theory", "online communication theory"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("10 communication issues") OR ("re colonization history"))) OR ("de communication theory"))~.
• Removing quotes may allow a broader search: (((( 10 communication issues ) or ( re colonization history ))) or ( de communication theory ))~.
• Adding a wildcard symbol may retrieve word variants: (((("10 communication issues") or ("re colonization history"))) or ("de communication theory"))*.