Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information costs » information contents, information centers, information content
technologien dis » technologien des, technologien als, technologien im
developing basic » developing asia, developing based, developing brazil
dis information » mis information, aids information, des informations
4 developing » 3 developing
de personal » der personal, des personal, de persona
costs de » costs _, costs a, costs 5
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information costs de personal communication costs 4 developing basic ideas.*.