Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologien dis » technologien des, technologien als, technologien im
information case » information based, information can, information costs
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
case de » case des, case d, case d1
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 case de personal communication costs 4 developing basic ideas.*.