Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
e device » _ device, a device, 4 device
des e » des _, des 3

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation des e device communication a leur developpement en afrique.*.