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 development » 2 development
development 4 » development 1
costs 3 » costs _, costs 4, costs a
4 areal » 4 real, _ areal, 2 areal
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 costs 3 development 4 areal.*.