Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information costs » information contents, information centers, information content
technologies 2 » technologies _, technologies 4
developing av » developing a, developing ai, developing amp
a developing » a development
ss personal » das personal, des personal, 1 personal
av africa » v africa, iv africa, can africa
costs ss » costs _, costs 4, costs 5
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information costs ss personal communication costs a developing av africa.*.