Perhaps you should try some spelling variations:
ddr communication » de communication, csr communication, under communication
technologien dis » technologien des, technologien als, technologien im
information case » information based, information can, information costs
dis information » mis information, aids information, des informations
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
case case » base case, case based, use case
costs 4.4 » costs 4.2
case ddr » case d, case d1, case d2

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 case ddr communication costs 4.4 developing _ areas.*.