Perhaps you should try some spelling variations:
"de communication history" » "de telecommunication history", "de communication sector", "de communication theory", "mobile communication history", "online communication history"
"_ colonization history" » "_ organization history", "_ cooperation history", "_ civilization history", "_ decolonization history", "decolonization _ history"
"pro colonization failed" » "pro colonization still", "pro organizations failed", "bio colonization failed", "re colonization failed", "mars colonization failed"

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: "((((\"pro colonization failed\") OR (\"_ colonization history\"))) OR (\"de communication history\"))~".
• Removing quotes may allow a broader search: (((( pro colonization failed ) OR ( _ colonization history ))) OR ( de communication history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("pro colonization failed") OR ("_ colonization history"))) OR ("de communication history"))*.