Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information costs » information contents, information centers, information content
technologies 4 » technologies _
developing cil » developing city, developing ai, developing ce
4 information » 2 information, 1 information
und personal » und personen, und person, und personelle
3 developing » 3 development
cil africa » cpia africa, can africa, china africa
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 4 information costs und personal communication costs 3 developing cil africa.*.