Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
transformation am » transformation a, transformationen am, transformation als
technologien die » technologie die, technologien des, technologien im
what optical » what political, what critical, dtam optical
3 developing » 3 development
developing 1 » developing _, developing a, developing e
am what » em what, tqm what
costs 3 » costs _, costs 4, costs a
1 areas » 1 area, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien die transformation am what optical communication costs 3 developing 1 areas.*.