Perhaps you should try some spelling variations:
oral communication » personal communication
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
developing band » developing brand, developing based, developing inland
information im » information 2, information 1, information 1.2
4 developing » 3 developing
band africa » bank africa, bank african, can africa
non oral » non oil, non arab
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 aids information im non oral communication costs 4 developing band africa.*.