Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information case » information based, information can, information costs
development 1.3 » development 15.3, development 10.3, development 12.3
technologien 2 » technologies 2, technologien _, technologien 1
4 development » 2 development, 4 developing
de personal » der personal, des personal, de persona
1.3 access » 1.1 access, 5.3 access, 1.2 access
case de » case des, case d, case d1
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 2 information case de personal communication costs 4 development 1.3 access.*.