Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
development 2 » development 1, development 2.1, development 2.3
model und » modell und, modelle und, model under
costs a » costs _, costs 4
2 areas » 1 areas, 2 areal, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information model und mobile communications costs a development 2 areas.*.