Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
der developpements » des developpements, deux developpements, de developpement
developpements de » developpement de, developpement des, developpement du
des variation » does variation, de variation, der variation
de afrique » de l'afrique, en afrique, l afrique
e device » _ device, a device, 4 device
a der » _ der, 2 der, 3 der
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 _ e device communication a der developpements de afrique.*.