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 can » information case, information 1, information 1.2
3 developing » 3 development
de personal » der personal, des personal, de persona
costs 3 » costs _, costs 4, costs a
can de » can do, can code, can deal

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 can de personal communication costs 3 developing _ asezs.*.