Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
informations based » information based, informational basis, informationsphase 1
technologien fur » technologien des, technologien und, technologies 2
fur informations » fur information, zur information, aux informations
3 developing » 3 development
developing e » developing _, developing a, developing east
based more » based core, based mode, based model
costs 3 » costs _, costs 4, costs a
e areal » _ areal, 2 areal, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: technologien fur informations based more mobile communications costs 3 developing e areal.*.