Perhaps you should try some spelling variations:
personalen communication » personal communication, personal communications, personal communicator
information case » information based, information can, information costs
developing east » development east, developing a, developing asia
technologies a » technologies _, technologies 4, technologies 2
der personalen » der personen, der regionalen
a information » 2 information, 1 information
4 developing » 3 developing
east areas » karst areas, east asezs
case der » case des, case under, phase der
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: technologies a information case der personalen communication costs 4 developing east areas.*.