Perhaps you should try some spelling variations:
transformation case » transformation based, transformation a, transformation als
des transformation » des transformations, der transformation, de transformation
oral communication » personal communication
technologien des » technologien fur, technologien und, technologies 2
developing areas » developing asia, developing east, developing a
4 developing » 3 developing
areas areas » areas arenas, seas areas, areas access
case some » cases some, case women, case sums
some oral » some moral, some oil
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 des transformation case some oral communication costs 4 developing areas areas.*.