Perhaps you should try some spelling variations:
technologien labor » technology labor, technologies lasers, technologien fur
information centre » information centers, information contents
labor information » sector information
de communication » mobile communication, online communication
3.3 developing » 4 developing, 2 developing, 1 developing
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
centre a » centres a, centre _, centre c
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologien labor information centre a de communication costs 3.3 developing _ africa.*.