Perhaps you should try some spelling variations:
2.1 informationsbasis » als informationsbasis, der informationsbasis
informationsbasis 2 » informationsbasis zum
oral communication » personal communication
technologies 2.1 » technologies _, technologies 4, technologies a
developing a » developing _
a africa » 1 africa, can africa, em africa
co oral » who oral
2 co » _ co, a co, 2 c

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 informationsbasis 2 co oral communication costs _ developing a africa.*.