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
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation 6 » variation _, variations _, variation des
deas device » real device, less devices
6 deas » 6 ideas, 6 dead
a der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation 6 deas device communication a der developpement en afrique.*.