Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
der device » der service, user device, user devices
des der » des dr, des ddr, des dem
a le » a les, a la, a l
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 der device communication a le developpement en afrique.*.