Perhaps you should try some spelling variations:
persona communication » personal communication, personal communications, personal communicator
information 3.3.1 » information 3.3.3, information 5.3.1, information 2.3.1
technologies 2 » technologies _, technologies 4
eine persona » eine person, ein persona, die persona
developing 4 » developing _, developing a, developing e
3.3.1 eine » 3.2.1 eine
4 areal » 4 real, _ areal, 2 areal

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 3.3.1 eine persona communication costs _ developing 4 areal.*.