Perhaps you should try some spelling variations:
face communication » voice communication, de communication, time communication
3.1 development » 2 development
technologies 4 » technologies _
information 23 » information 2.3, information 2, information 3
4 information » 2 information, 1 information
development 4 » development 1
costs 3.1 » costs 3.5, costs 4.1, costs 2.1
und face » und fach, und farbe, und fabel
4 areal » 4 real, _ areal, 2 areal
23 und » 13 und

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 23 und face communication costs 3.1 development 4 areal.*.