Perhaps you should try some spelling variations:
communication model » communication media
worked development » workers development, world development, work development
information 1.2 » information 1.5.2, information 2
technologies 2 » technologies _, technologies 4
model worked » model work, model works, modern worker
drei risk » di risk, drei bis
1.2 drei » 1.4 drei, 1.6 drei, 6.2 drei

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 1.2 drei risk communication model worked development _ african.*.