Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
developing system » developing systems, developing ecosystem, development system
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
system stresses » system strikes, system strategies, system processes
information 1 » information 2, information 3, information 3.2
4 developing » 3 developing
de voice » de voce, de voie, new voice
costs 4 » costs _, costs a, costs 4.2
1 de » 1 die, 1 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologien des information 1 de voice communication costs 4 developing system stresses.*.