Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologies 2 » technologies _, technologies 4
known personal » non personal, lohn personal, von personal
preface known » preface how, preface note, preface new
4 developing » 3 developing
developing 2 » developing _, developing a, developing e
2 access » 3 access
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information preface known personal communication costs 4 developing 2 access.*.