Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologies 3 » technologies _, technologies 4, technologies 2
3 information » 1 information
information 3 » information 2
a developing » a development
developing 4 » developing _, developing a, developing e
costs a » costs _, costs 4
4 areas » 1 areas, 2 areas, 4 areal
3 und » 13 und, 23 und, _ und

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 information 3 und mobile communications costs a developing 4 areas.*.