Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
technologies 1 » technologies _, technologies 4, technologies 2
information 23 » information 2.3, information 2, information 3
3 developing » 3 development
developing a » developing _
23 und » 13 und
und de » und der, und des, und den

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information 23 und de communication _ 3 developing a real.*.