Perhaps you should try some spelling variations:
oral communication » personal communication
information case » information based, information can, information costs
technologien 1 » technologies 1, technologien _, technologien 4
developing a » developing _
case case » base case, case based, use case
case oral » ashe oral
a africa » 1 africa, can africa, em africa

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

• Adding a wildcard symbol may retrieve word variants: technologien 1 information case case oral communication costs _ developing a africa.*.