Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
technologien als » technologien des, technologien fur, technologien und
developing waste » developing east, developing water, developing eastern
als information » als informations, aids information, laws information
information can » information case, information 1, information 1.2
waste stresses » water stresses, system stresses, waste streams
4 developing » 3 developing
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien als information can _ voice communication costs 4 developing waste stresses.*.