Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
au developpement » du developpement, de developpement, le developpement
communication 3 » communication _, communication a
der variation » de variation, does variation, die variation
typology der » typologie der, typologien der, typologie des
la afrique » la fabrique, en afrique
der voice » user voice, new voice
l afrique » en afrique
3 au » 3 auf, 3 a, 3 zu

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: "typology der variation _ der voice communication 3 au developpement ((la afrique) OR (l afrique)).~".
• Adding a wildcard symbol may retrieve word variants: typology der variation _ der voice communication 3 au developpement ((la afrique) OR (l afrique)).*.