Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications a » communications _, communications law, communications media
de developpement » sme development
des variation » does variation, de variation, der variation
variation der » variation des, variation bei, variation _
typology des » typologie des, typologie der, typology _
des afrique » en afrique, de l'afrique
das mobile » does mobile, a mobile
der das » oder das, der daf, der dax
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: typology des variation der das mobile communications a de developpement des afrique.*.