Perhaps you should try some spelling variations:
oral communication » personal communication
information case » information based, information can, information costs
technologien ad » technologien am, technologien und, technologien als
2.3 development » 2 development, 2015 development, 1 development
development 2.3 » development 2.1, development 1
ad information » d information, nd information, od information
2.3 access » 5.3 access, 1.3 access, 2.4 access
costs 2.3 » costs 4.2, costs 4.4
case 2 » case 1
2 oral » _ oral, 4 oral

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information case 2 oral communication costs 2.3 development 2.3 access.*.