Perhaps you should try some spelling variations:
transformation based » transformation case, transformation a, transformation als
model communications » modern communications, border communications, aided communications
communications costs » communication costs, communications _
technologien die » technologie die, technologien des, technologien im
4 developing » 3 developing
developing 4 » developing _, developing a, developing e
based model » based models, based modeling
model model » models model, model code
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: technologien die transformation based model model communications costs 4 developing 4 areas.*.