Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologien als » technologien des, technologien fur, technologien und
information case » information based, information can, information costs
als information » als informations, aids information, laws information
developing east » development east, developing a, developing asia
des personal » des personals, der personal, das personal
4 developing » 3 developing
east areas » karst areas, east asezs
case des » cases des, case das, phase des
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 als information case des personal communication costs 4 developing east areas.*.