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