Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
developpement en » developpement et, developpement des, developpement de
d developpement » de developpement, du developpement, le developpement
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
die voice » cine voice, one voice
des die » es die, des diw, des dix
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation des die voice communication a d developpement en afrique.*.