Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication costa » communication costs, communications costs, communication cote
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws information
information 6.3 » information 16.3, information 1.3, information 6.1
non personal » 1 personal, 4 personal, 2 personal
developing 4 » developing _, developing a, developing e
6.3 non » 16.3 non, 4.3 non, 5.3 non
4 areas » 1 areas, 2 areas, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: technologien als information 6.3 non personal communication costa _ developing 4 areas.*.