Perhaps you should try some spelling variations:
technologien energy » technology energy, technologies general
oral communication » personal communication
developing east » development east, developing a, developing asia
information 2 » information 3
3 developing » 3 development
der oral » der moral, der ort, der orte
costs 3 » costs _, costs 4, costs a
2 der » _ der
areal. » areas., area., real.

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

• Adding a wildcard symbol may retrieve word variants: technologien energy information 2 der oral communication costs 3 developing east areal.*.