Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information 6.3 » information 16.3, information 1.3, information 6.1
a developing » a development
developing e » developing _, developing a, developing east
4 personal » a personal, 1 personal, 1945 personal
costs a » costs _, costs 4
e areas » 1 areas, 2 areas, 4 areas
6.3 4 » 6.3 _, 6.3 a, 6.1 4

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 4 personal communication costs a developing e areas.*.