Perhaps you should try some spelling variations:
"re colonization history" » "re communication history", "re organization history", "re cooperation history", "pro colonization history", "jews colonization history", "mars colonization history"
"online communication theory" » "mobile communication theory", "business communication theory", "mobile communications theory", "online communication technology"
"_ colonization israel" » "_ communication israel", "_ colonization still", "_ decolonization islam"

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

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