Perhaps you should try some spelling variations:
model transformation » der transformation, social transformation, rural transformation
technological model » technological models, technological tools, technological content
transformation aus » transformation als, transformation a, transformation case
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
developing 2 » developing _, developing a, developing e
cost 3.2 » cost 2.4
aus one » us one, aus bonn, aus oder
2 areas » 1 areas, 2 areal, 4 areas
one de » one die, one do, one demo

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

• Adding a wildcard symbol may retrieve word variants: technological model transformation aus one de communication cost 3.2 developing 2 areas.*.