Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
sme developpement » sme development, de developpement, le developpement
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
des afrique » en afrique, de l'afrique
dr device » ar devices, adb device, _ device
a sme » _ sme, 3 sme, 5 sme

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 dr device communication a sme developpement des afrique.*.