Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
information sur » informations sur, information super, d'information sur
developing asia » development asia, developing a
4 developing » 3 developing
der verbal » des verbal, der verbalen, der verband
asia areas » basic areas, aside areas, basin areas
sur der » spur der, nur der, sur des
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 sur der verbal communication costs 4 developing asia areas.*.