Perhaps you should try some spelling variations:
information 1933 » information 1.3, information 14.3, information 11.3
de communication » mobile communication, online communication
technologies 1 » technologies _, technologies 4, technologies 2
4 developing » 3 developing
1933 und » 13 und
costs 4 » costs _, costs a, costs 4.2
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 1933 und de communication costs 4 developing _ areal.*.