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 age » information storage, information access, information about
des personal » des personals, der personal, das personal
developing e » developing _, developing a, developing east
age des » lage des, auge des, age de
e 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 2.1 information age des personal communication costs _ developing e areal.*.