Perhaps you should try some spelling variations:
oral communication » personal communication
ad transformative » a transformative, das transformative, und transformative
technologien ad » technologien am, technologien und, technologien als
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing a » developing _
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
de oral » de otras, new oral
a 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: technologien ad transformative _ de oral communication costs 2.2 developing a areas.*.