Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologies energy » technologies general, technology energy, technologies any
der personal » der personalen, der personen, der person
a developing » a development
developing 2 » developing _, developing a, developing e
costs a » costs _, costs 4
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 energy information _ der personal communication costs a developing 2 areal.*.