Perhaps you should try some spelling variations:
technologien about » technologien auf, technologien fur, technologien als
information centre » information centers, information contents
oral communication » personal communication
about information » account information, labor information, about inflation
developing iv » developing av, developing ict, developing cil
4 developing » 3 developing
centre de » centre _, centrale des
iv africa » v africa, 1 africa, em africa
de oral » de otras, new oral
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien about information centre de oral communication costs 4 developing iv africa.*.