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 informations » als information, des informations, a informations
system stresses » system strikes, system strategies, system processes
informations 1 » informations und, informations sur, informations och
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 informations 1 de voice communication costs 4 developing system stresses.*.