Perhaps you should try some spelling variations:
oral communication » personal communication
technologien als » technologien des, technologien fur, technologien und
developing banks » development banks, developing based, developing brand
als information » als informations, aids information, laws information
4 developing » 3 developing
banks africa » bank's africa, bank africa, bank african
non oral » non oil, non arab
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 als information 3.2 non oral communication costs 4 developing banks africa.*.