Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
transformation als » transformation a, transformation _, transformation 1
technologie die » technologie de, technologie im, technologie der
what optical » what political, what critical, dtam optical
4 developing » 3 developing
developing 4 » developing _, developing a, developing e
als what » goals what, fails what, als white
costs 4 » costs _, costs a, costs 4.2
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: technologie die transformation als what optical communication costs 4 developing 4 areas.*.