Perhaps you should try some spelling variations:
technologien secondary » technologien bedarf, technologies necessary
secondary information » security information
oral communication » personal communication
developing basic » developing asia, developing based, developing brazil
information 3 » information 2
4 developing » 3 developing
basic areas » basin area, basic ideas, basic access
debt oral » debt moral, debt oil
costs 4 » costs _, costs a, costs 4.2
3 debt » 83 debt, 4 debt, 2.3 debt

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

• Adding a wildcard symbol may retrieve word variants: technologien secondary information 3 debt oral communication costs 4 developing basic areas.*.