Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
communication 3 » communication _, communication a
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
typology des » typologie des, typologie der, typology _
deas device » real device, less devices
des deas » des des, des degats, des delays
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: typology des variation des deas device communication 3 der developpement en afrique.*.