Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
de developpement » sme development
developpement de » developpement des, developpement durable
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation a » variation _, variation 6, variation 5
dead device » end device, real device, load devices
a dead » a decade, a demand
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation a dead device communication a de developpement de l'afrique.*.