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
information case » information based, information can, information costs
2.3 development » 2 development, 2015 development, 1 development
development 2.3 » development 2.1, development 1
2.3 access » 5.3 access, 1.3 access, 2.4 access
costs 2.3 » costs 4.2, costs 4.4
case des » cases des, case das, phase des
des oral » des moral, des oil, des orts

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information case des oral communication costs 2.3 development 2.3 access.*.