Perhaps you should try some spelling variations:
5.4 communication » de communication, data communication
technologien fur » technologien des, technologien und, technologies 2
information case » information based, information can, information costs
fur information » zur information, fair information, your information
developing a » developing _
costs a » costs 4
a areal » _ areal, 2 areal, 4 areal
case a » case 1, case 2, case 3
a 5.4 » a 5.1, a 3.4, a 5.3

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologien fur information case a 5.4 communication ((costs a) OR (costs _)) developing a areal.~".
• Adding a wildcard symbol may retrieve word variants: technologien fur information case a 5.4 communication ((costs a) OR (costs _)) developing a areal.*.