Perhaps you should try some spelling variations:
persona communications » personal communications, personal communication, regional communications
communications costs » communication costs, communications _
information 3.2.1 » information 13.2.1, information 3.2.2, information 5.2.1
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
3 development » 2 development
ein persona » eine person, die persona, non personal
3.2.1 ein » 3.2.1 eine, 2.2.1 ein, 1.2.1 ein
costs 3 » costs _, costs 4, costs a
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien des information 3.2.1 ein persona communications costs 3 development a areas.*.