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
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
information 2 » information 3
developing 2 » developing _, developing a, developing e
best oral » best deal
2 areas » 1 areas, 2 areal, 4 areas
2 best » 3 best, 4 best, 1 best

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information 2 best oral communication costs 4.2 developing 2 areas.*.