Perhaps you should try some spelling variations:
oral communication » personal communication
information case » information based, information can, information costs
technologien f » technologien _, technologien 1, technologien 4
f information » 2 information, 1 information, 3 information
a developing » a development
case case » base case, case based, use case
case oral » ashe oral
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologien f information case case oral communication costs a developing _ africa.*.