Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
5 developing » 3 developing, 4 developing, 2 developing
developing 1 » developing _, developing a, developing e
contents a » contents 1, contents _, contents i
a mobile » _ mobile
costs 5 » costs _, costs 4, costs a

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 a mobile communications costs 5 developing 1 africa.*.