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
der personal » der personalen, der personen, der person
3 developing » 3 development
developing 2 » developing _, developing a, developing e
costs 3 » costs _, costs 4, costs a
2 areal » 2 real, _ areal, 2 areas

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 3 developing 2 areal.*.