Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
information 2 » information 3
des personal » des personals, der personal, das personal
developing e » developing _, developing a, developing east
e areal » _ areal, 2 areal, 4 areal
2 des » 2 der, 2 das, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information 2 des personal communication costs _ developing e areal.*.