Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
model communications » modern communications, border communications, aided communications
1 transformation » 4 transformation, die transformation, der transformation
transformation 2 » transformation _, transformation a, transformation 1
technologien 1 » technologies 1, technologien _, technologien 4
4 developing » 3 developing
model model » models model, model code
2 model » 3.2 model, 4.2 model, 2.2 model
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 1 transformation 2 model model communications costs 4 developing _ areas.*.