Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information costs » information contents, information centers, information content
developing based » development based, developing asia, developing east
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
der personal » der personalen, der personen, der person
based areas » base areas, based areal, basic areas
costs der » costs differ

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information costs der personal communication costs _ developing based areas.*.