Perhaps you should try some spelling variations:
model communication » modern communication, moral communication, modeling communication
transformation als » transformation a, transformation _, transformation 1
technologien die » technologie die, technologien des, technologien im
safety model » safety models
4 developing » 3 developing
als safety » aids safety, dams safety, faults safety
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 die transformation als safety model communication costs 4 developing _ trends.*.