Perhaps you should try some spelling variations:
"de telecommunication history" » "de telecommunication sector", "de telecommunication sectors", "de communication history", "_ telecommunication history", "3 telecommunication history", "web telecommunications history"
"re cooperation history" » "re corporation history", "re federation history", "de cooperation history", "area cooperation history", "rate cooperation history"
"_ colonization songs" » "_ colonization still", "_ colonization work", "_ decolonization notes"

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: (((("_ colonization songs") OR ("re cooperation history"))) OR ("de telecommunication history"))~.
• Removing quotes may allow a broader search: (((( _ colonization songs ) or ( re cooperation history ))) or ( de telecommunication history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("_ colonization songs") or ("re cooperation history"))) or ("de telecommunication history"))*.