Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
developing rates » developing states, developing water, developing cities
des information » des informations, does information, dis information
4 developing » 3 developing
rates africa » state africa
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 contents _ online communication cost 4 developing rates africa.*.