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 2 » information 3
a developing » a development
developing 2 » developing _, developing a, developing e
costs a » costs _, costs 4
2 areas » 1 areas, 2 areal, 4 areas
und de » und der, und des, und den
2 und » _ und, i 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 2 und de communication costs a developing 2 areas.*.