Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information case » information based, information can, information costs
development 3.6 » development 3.1, development 3.3, development 3.2
technologies 2 » technologies _, technologies 4
20 development » 2 development, 2015 development, 2007 development
de personal » der personal, des personal, de persona
3.6 access » 3.1 access, 3.2 access, 3 access
costs 20 » costs 60, costs 2.3, costs 2.1
case de » case des, case d, case d1

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information case de personal communication costs 20 development 3.6 access.*.