Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologien series » technologies series, technology series, technologies varies
series information » business information
developing areas » developing asia, developing east, developing a
information 1 » information 2, information 3, information 3.2
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
1 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 series information 1 der personal communication costs 4 developing areas areas.*.