Perhaps you should try some spelling variations:
personal communications » personal communication, interpersonal communications, internal communications
communications costs » communication costs, communications _
information 2.3.2 » information 2.2.2, information 4.3.2, information 3.2
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
4 developing » 3 developing
developing a » developing _
de personal » der personal, des personal, de persona
2.3.2 de » 2.3.2 die, 2.3.2 der, 9.3.2 de
costs 4 » costs _, costs a, costs 4.2
a area » a areas, 1 area, 3 area

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

• Adding a wildcard symbol may retrieve word variants: technologien des information 2.3.2 de personal communications costs 4 developing a area.*.