Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
information case » information based, information can, information costs
de communication » mobile communication, online communication
des information » des informations, does information, dis information
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
developing 4 » developing _, developing a, developing e
case der » case des, case under, phase der
4 areas » 1 areas, 2 areas, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: technologien des information case der de communication cost 2.4 developing 4 areas.*.