Perhaps you should try some spelling variations:
information centers » information contents, information officers
oral communication » personal communication
technologien nd » technologien und, technologien ad, technologie und
nd information » und information, d information, od information
20 developing » 2 developing, 10 developing, 24 developing
developing a » developing _
costs 20 » costs 60, costs 2.3, costs 2.1
a africa » 1 africa, can africa, em africa

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

• Adding a wildcard symbol may retrieve word variants: technologien nd information centers _ oral communication costs 20 developing a africa.*.