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
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
case des » cases des, case das, phase des
des ddr » der ddr, des dr, dem ddr

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 des ddr communication costs 4.2 developing _ areas.*.