Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information 15.2 » information 1.5.2, information 1.2, information 1.3
technologien 2 » technologies 2, technologien _, technologien 1
a developing » a development
1 personal » a personal, 4 personal, 1945 personal
costs a » costs _, costs 4
15.2 1 » 15.2 _, 15.2 a

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

• Adding a wildcard symbol may retrieve word variants: technologien 2 information 15.2 1 personal communication costs a developing _ real.*.