Perhaps you should try some spelling variations:
models communications » modern communications, modern communication, zones communications
communications costs » communication costs, communications _
am transformative » a transformative, das transformative, als transformative
technologien am » technologien im, technologien als, technologie im
4 developing » 3 developing
developing 2 » developing _, developing a, developing e
costs 4 » costs _, costs a, costs 4.2
2 areal » 2 real, _ areal, 2 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien am transformative _ based models communications costs 4 developing 2 areal.*.