Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
development eco » development second, development east, development menu
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation des » variation _, variation 6, variation series
eco afrique » en afrique
new voice » new voices, one voice
3 sme » 3 same, _ sme, 5 sme
3 smt » _ smt, 3 set, 4 smt

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: "typologie does variation des new voice communication ((3 sme) OR (3 smt)) development eco afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie does variation des new voice communication ((3 sme) OR (3 smt)) development eco afrique.*.