Perhaps you should try some spelling variations:
technologien secondary » technologien bedarf, technologies necessary
secondary information » security information
oral communication » personal communication
developing based » development based, developing asia, developing east
information 2 » information 3
4 developing » 3 developing
based areal » based real, base areas, based animal
debt oral » debt moral, debt oil
costs 4 » costs _, costs a, costs 4.2
2 debt » 3 debt, 4 debt, 2.5 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 2 debt oral communication costs 4 developing based areal.*.