Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologies series » technology series
series information » business information
information 2.5 » information 2.2, information 2.7, information 2.0
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
der personal » der personalen, der personen, der person
developing a » developing _
a areal » _ areal, 2 areal, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: technologies series information 2.5 der personal communication costs 4.2 developing a areal.*.