Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologien der » technologien des, technologie der, technologien fur
developing areas » developing asia, developing east, developing a
der information » insider information, sector information, labor information
information 1 » information 2, information 3, information 3.2
4 developing » 3 developing
areas areas » areas arenas, seas areas, areas access
die mobile » does mobile, das mobile, day mobile
costs 4 » costs _, costs a, costs 4.2
1 die » 2 die, 3 die, _ die

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

• Adding a wildcard symbol may retrieve word variants: technologien der information 1 die mobile communications costs 4 developing areas areas.*.