Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
site developpement » site development, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
communication 5 » communication _, communication a, communication 3
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
vs device » _ device, a device, 4 device
des vs » des vfs, des vi, des vers
5 site » 35 site, _ site, a site

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation des vs device communication 5 site developpement en afrique.*.