Perhaps you should try some spelling variations:
deep communication » de communication, debt communication, data communication
technologien den » technologien des, technologies de, technologie de
den transport » de transport, sea transport, ion transport
4 developing » 3 developing
developing a » developing _
a arenas » _ arenas, a areas, 11 arenas
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: technologien den transport network model deep communication costs 4 developing a arenas.*.