Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
des transformation » des transformations, der transformation, de transformation
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
transformation 1 » transformation _, transformation a, transformation 3
4 developing » 3 developing
developing a » developing _
a accessed » all accessed, last accessed, who accessed
cost 4 » cost _, cost 2.4

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

• Adding a wildcard symbol may retrieve word variants: technologien des transformation 1 _ voice communication cost 4 developing a accessed.*.