Perhaps you should try some spelling variations:
model transformation » der transformation, social transformation, rural transformation
technological model » technological models, technological tools, technological content
transformation mars » transformation als, transformation aus, transformation hans
de communication » mobile communication, online communication
3.5 developing » 3.3 developing, 3.2 developing, 1.5 developing
developing e » developing _, developing a, developing east
mars oder » aus oder, muss oder
costs 3.5 » costs 4.2, costs 4.4, costs 2.3
oder de » oder die, oder der, oder den
e areas » 1 areas, 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: technological model transformation mars oder de communication costs 3.5 developing e areas.*.