Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
der developpement » de developpement, des developpements, leur developpement
communication 2 » communication _, communication a, communication 3
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
typology des » typologie des, typologie der, typology _
des afrique » en afrique, de l'afrique
des delays » des deas, des degats, des deltas
2 der » _ der

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

• Adding a wildcard symbol may retrieve word variants: typology des variation des delays device communication 2 der developpement des afrique.*.