Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
des developpement » des developpements, de developpement, le developpement
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
real device » real devices, legal devices, final device
des afrique » en afrique, de l'afrique
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 _ real device communication a des developpement des afrique.*.