Perhaps you should try some spelling variations:
technologien bedarf » technologien auf
bedarf information » secondary information
oral communication » personal communication
information 2.7 » information 2.2, information 3.2, information 1.2
developing asia » development asia, developing a
a developing » a development
asia areas » basic areas, aside areas, basin areas
2.7 heat » 22.7 heat, 2.1.7 heat
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologien bedarf information 2.7 heat oral communication costs a developing asia areas.*.