Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologien dis » technologien des, technologien als, technologien im
developing areas » developing asia, developing east, developing a
dis information » mis information, aids information, des informations
information b » information 2, information 1, information bank
der personal » der personalen, der personen, der person
4 developing » 3 developing
areas areas » areas arenas, seas areas, areas access
costs 4 » costs _, costs a, costs 4.2
b der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information b der personal communication costs 4 developing areas areas.*.