Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
au developpement » du developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
does variation » de variation, der variation, die variation
typology does » typologie des, apology do's, typology how
der voice » user voice, new voice
l afrique » en afrique
a au » a auf, a bau, a aus

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

• Adding a wildcard symbol may retrieve word variants: typology does variation _ der voice communication a au developpement l afrique.*.