Perhaps you should try some spelling variations:
technologien energy » technology energy, technologies general
developing learning » development learning, developing teaching
ii communication » de communication, 3 communication, 4 communication
information 13 » information 1.3, information 3, information 1
4 developing » 3 developing
costs 4 » costs _, costs a, costs 4.2
13 und » 1933 und
und ii » und im
loss. » less.

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

• Adding a wildcard symbol may retrieve word variants: technologien energy information 13 und ii communication costs 4 developing learning loss.*.