Perhaps you should try some spelling variations:
"de communication sector" » "de telecommunication sector", "de telecommunications sector", "de communication series", "mobile communication sector", "online communication sector"
"re cooperation history" » "re corporation history", "re federation history", "de cooperation history", "area cooperation history", "rate cooperation history"
"re colonization songs" » "re colonization still", "re colonization work", "re decolonization notes", "pro colonization songs", "_ colonization songs", "jews colonization songs"

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