Perhaps you should try some spelling variations:
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
contents arc » contents a, contents 1pc, contents 3rd
4 developing » 3 developing
em africa » 1 africa
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 dis information contents arc oral communication costs 4 developing em africa.*.