Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
technologien des » technologien fur, technologien und, technologies 2
information case » information based, information can, information costs
des information » des informations, does information, dis information
a developing » a development
developing a » developing _
a accessed » all accessed, last accessed, who accessed
5 voice » 5 voices, _ voice, a voice
costs a » costs _, costs 4
case 5 » case 1, case 2, case 3

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

• Adding a wildcard symbol may retrieve word variants: technologien des information case 5 voice communication costs a developing a accessed.*.