Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
de communication » mobile communication, online communication
des information » des informations, does information, dis information
4 developing » 3 developing
3.2 why » 1.2 why, 2.2 why, 8.2 why
why de » why do, why does, why code
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 information 3.2 why de communication cost 4 developing _ access.*.