Perhaps you should try some spelling variations:
"pro communication french" » "pro communication france", "pro communication agency", "pro telecommunication french", "prone communication french", "ngo communication french", "proper communication french"
"_ colonization history" » "_ communication history", "_ organization history", "_ cooperation history", "_ decolonization history", "decolonization _ 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: (((("pro communication french") OR ("_ colonization history"))) OR ("de communication theory"))~.
• Removing quotes may allow a broader search: (((( pro communication french ) or ( _ colonization history ))) or ( de communication theory ))~.
• Adding a wildcard symbol may retrieve word variants: (((("pro communication french") or ("_ colonization history"))) or ("de communication theory"))*.