Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
technologies 2 » technologies _, technologies 4
information i » information im, information 2, information 1
4 developing » 3 developing
developing a » developing _
costs 4 » costs _, costs a, costs 4.2
a areal » _ areal, 2 areal, 4 areal
und de » und der, und des, und den
i und » _ und

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information i und de communication costs 4 developing a areal.*.