Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
developing system » developing systems, developing ecosystem, development system
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws 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 als information 1 de voice communication costs 4 developing system stresses.*.