Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
information costs » information contents, information centers, information content
technologien als » technologien des, technologien fur, technologien und
developing basin » developing asia, developing asian, developing based
als information » als informations, aids information, laws information
3 developing » 3 development
basin access » basic access, gain access, based access
costs 11 » costs 1, costs 11.1, costs 11.4
11 voice » 2.1 voice, _ voice, a voice
costs 3 » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologien als information costs 11 voice communication costs 3 developing basin access.*.