Perhaps you should try some spelling variations:
3.4 communication » 5.4 communication, 3.2 communication, 3.5 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 areal » _ areal, 2 areal, a areas
4 areal » 4 real, _ areal, 2 areal
case 2 » case 1
2 3.4 » 2 3.3, 2 3.2, _ 3.4

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 2 3.4 communication costs _ developing ((a areal) OR (4 areal)).~".
• Adding a wildcard symbol may retrieve word variants: technologien fur information case 2 3.4 communication costs _ developing ((a areal) OR (4 areal)).*.