Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information 6.3 » information 16.3, information 1.3, information 6.1
ein personal » ein persona, non personal, e personal
3 developing » 3 development
developing a » developing _
6.3 ein » 5.3 ein, 1.3 ein, 4.3 ein
costs 3 » costs _, costs 4, costs a
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien _ information 6.3 ein personal communication costs 3 developing a areas.*.