Perhaps you should try some spelling variations:
technologies key » technologies any, technologies know, technologies _
de communication » mobile communication, online communication
key information » energy information
information 3 » information 2
a developing » a development
developing 4 » developing _, developing a, developing e
costs a » costs _, costs 4
4 areas » 1 areas, 2 areas, 4 areal
und de » und der, und des, und den
3 und » 13 und, 23 und, _ und

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

• Adding a wildcard symbol may retrieve word variants: technologies key information 3 und de communication costs a developing 4 areas.*.