Perhaps you should try some spelling variations:
modern communication » modern communications, modern communicator, modeling communication
technologien des » technologien fur, technologien und, technologies 2
network routes » network sites, network states, network robustness
2.1 developing » 2.2 developing, 2.3 developing, 2.6 developing
des transport » des transports, de transport, den transport
routes modern » notes modern, does modern, goes modern
developing 4 » developing _, developing a, developing e
costs 2.1 » costs 2.3, costs 4.1, costs 2.2
4 areas » 1 areas, 2 areas, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: technologien des transport network routes modern communication costs 2.1 developing 4 areas.*.