Perhaps you should try some spelling variations:
oral communication » personal communication
technologien cost » technologien ist, technologien des, technologies co
cost information » postal information, about information, asset information
developing iv » developing av, developing ict, developing cil
4 developing » 3 developing
contents 16 » contents 1, contents 19, contents 1.1
iv africa » v africa, 1 africa, em africa
16 oral » 16 moral, 1 oral, 10 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 cost information contents 16 oral communication costs 4 developing iv africa.*.