Perhaps you should try some spelling variations:
ddr communication » de communication, csr communication, under communication
information case » information based, information can, information costs
3.3 developing » 4 developing, 2 developing, 1 developing
developing a » developing _
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
case des » cases des, case das, phase des
des ddr » der ddr, des dr, dem ddr
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien _ information case des ddr communication costs 3.3 developing a areas.*.