Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologien aids » technologien als, technologien ad, technologien des
developing skills » developing states
aids information » chandos information, series information
information 2 » information 3
skills create » skills creating, skills increase
4 developing » 3 developing
de personal » der personal, des personal, de persona
costs 4 » costs _, costs a, costs 4.2
2 de » 2 die, 2 der, _ de

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 de personal communication costs 4 developing skills create.*.