Perhaps you should try some spelling variations:
information centre » information centers, information contents
oral communication » personal communication
technologien dis » technologien des, technologien als, technologien im
dis information » mis information, aids information, des informations
developing em » developing e, developing eq, developing amp
centre china » century china, central china, centers china
2 developing » 3 developing, 4 developing, 2 development
china oral » china rural
em africa » 1 africa
costs 2 » costs 20, costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information centre china oral communication costs 2 developing em africa.*.