Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information costs » information contents, information centers, information content
developing china » developing china's, development china, developing caring
technologies 2 » technologies _, technologies 4
und personal » und personen, und person, und personelle
3 developing » 3 development
china africa » cpia africa, china asia
costs und » costs used, costs united, costs edmund
costs 3 » costs _, costs 4, costs a

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 und personal communication costs 3 developing china africa.*.