Perhaps you should try some spelling variations:
personal communication » interpersonal communication
2.3 development » 2 development, 2015 development, 1 development
development 2.3 » development 2.1, development 1
information 13 » information 1.3, information 3, information 1
under personal » und personal, der personal, de personal
2.3 access » 5.3 access, 1.3 access, 2.4 access
costs 2.3 » costs 4.2, costs 4.4
13 under » 10 under, 3.3 under, 13 und

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

• Adding a wildcard symbol may retrieve word variants: technologien _ information 13 under personal communication costs 2.3 development 2.3 access.*.