Perhaps you should try some spelling variations:
transportation network » transport network
modern communication » modern communications, modern communicator, modeling communication
am transportation » a transportation, gas transportation, air transportation
technologien am » technologien im, technologien als, technologie im
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
developing 2 » developing _, developing a, developing e
network pt » networks pt, network _, network 3
pt modern » post modern, pre modern, art modern
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
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 am transportation network pt modern communication costs 4.1 developing 2 areas.*.