Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
des developpements » deux developpements, de developpement, et developpements
developpements en » developpement en, developpement et, developpements de
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
deas device » real device, less devices
des deas » des des, des degats, des delays
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 des deas device communication a des developpements en afrique.*.