Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
technologien dis » technologien des, technologien als, technologien im
information case » information based, information can, information costs
dis information » mis information, aids information, des informations
3 developing » 3 development
developing a » developing _
a access » 2 access, 3 access, 4 access
3 voice » 3 voices, _ voice, a voice
costs 3 » costs _, costs 4, costs a
case 3 » case 1, case 2

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information case 3 voice communication costs 3 developing a access.*.