Perhaps you should try some spelling variations:
ddr communication » de communication, csr communication, under communication
information case » information based, information can, information costs
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
developing 1 » developing _, developing a, developing e
costs 4.4 » costs 4.2
case dem » case des, case d, case d1
dem ddr » der ddr, dem der, den ddr
1 areas » 1 area, 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 dem ddr communication costs 4.4 developing 1 areas.*.