Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
des developpement » des developpements, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
realen device » real device, beaker device, real devices
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
a des » a der, a das

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

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