Perhaps you should try some spelling variations:
mobile communications » mobile communication
der developpement » de developpement, des developpements, leur developpement
communications a » communications _, communications law, communications media
des variation » does variation, de variation, der variation
variation bei » variation des, variation der, variation _
typology des » typologie des, typologie der, typology _
des afrique » en afrique, de l'afrique
der mobile » der mobilen, der mobil, does mobile
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: typology des variation bei der mobile communications a der developpement des afrique.*.