Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologies 2 » technologies _, technologies 4
contents neue » contents note, contents new, contents neural
4 developing » 3 developing
developing 1 » developing _, developing a, developing e
neue mobile » new mobile, house mobile, where mobile
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information contents neue mobile communications costs 4 developing 1 africa.*.