Perhaps you should try some spelling variations:
developing learning » development learning, developing teaching
technologies die » technologies de, technologie die, technologies bit
transformation 3 » transformation _, transformation a, transformation 1
de communication » mobile communication, online communication
learning arenas » learning areas
3 developing » 3 development
costs 3 » costs _, costs 4, costs a
und de » und der, und des, und den
3 und » 13 und, 23 und, _ und

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

• Adding a wildcard symbol may retrieve word variants: technologies die transformation 3 und de communication costs 3 developing learning arenas.*.