Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologies used » technologies based, technology used, technologies _
rate developments » trade developments, price developments, site development
used innovation » user innovation, use innovation, based innovation
communication 1 » communication _, communication a, communication 3
innovation 2 » innovation 1, innovation 4, innovation 3
do personal » de personal, der personal, das personal
1 rate » 3 rate, e rate
2 do » _ do, 2 co, 2 de

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

• Adding a wildcard symbol may retrieve word variants: technologies used innovation 2 do personal communication 1 rate developments _ afrique.*.