Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
der developpement » de developpement, des developpements, leur developpement
de variations » de variation, 1er variations, ier variations
typologie de » typologie des, typologie der, typologien der
des afrique » en afrique, de l'afrique
dem device » tpm device
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 de variations _ dem device communication a der developpement des afrique.*.