Perhaps you should try some spelling variations:
persona communication » personal communication, personal communications, personal communicator
technologien aids » technologien als, technologien ad, technologien des
developing skills » developing states
aids information » chandos information, series information
4 developing » 3 developing
de persona » de personal, de personas, die persona
skills ana » skills afar, skills a, skills can
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information _ de persona communication costs 4 developing skills ana.*.