Perhaps you should try some spelling variations:
5.3 communication » 2.3 communication, 4.3 communication, 1.3 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
a developing » a development
costs a » costs _, costs 4
a areal » 2 areal, 4 areal, a areas
_ areal » _ area, _ areas, _ aral
case a » case 1, case 2, case 3
a 5.3 » a 3.3, a 5.1, a 2.3

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 5.3 communication costs a developing ((a areal) OR (_ areal)).~".
• Adding a wildcard symbol may retrieve word variants: technologien fur information case a 5.3 communication costs a developing ((a areal) OR (_ areal)).*.