Perhaps you should try some spelling variations:
personen communication » personal communication, personal communications, prone communication
information costs » information contents, information centers, information content
developing cil » developing city, developing ai, developing ce
und personen » und personelle, der personen
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 _ information costs und personen communication costs 3 developing cil africa.*.