Perhaps you should try some spelling variations:
technologien bedarf » technologien auf
bedarf information » secondary information
oral communication » personal communication
information 2.1.7 » information 2.1.5, information 2.1.6, information 2.2.7
developing east » development east, developing a, developing asia
3 developing » 3 development
2.1.7 heat » 2.2.4 heat, 2.2.6 heat, 2.3.2 heat
east areas » karst areas, east asezs
costs 3 » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologien bedarf information 2.1.7 heat oral communication costs 3 developing east areas.*.