Perhaps you should try some spelling variations:
face communication » voice communication, de communication, time communication
communication 6.1 » communication 4.1, communication 7.1, communication 1.1
informal channel » informal channels, formal channels, informal care
technologies 8 » technologies _, technologies 4, technologies 2
8 informal » _ informal, 3 informal, vs informal
1 afrique » l afrique, en afrique, 1 enrique
6.1 2 » 6.1 c2, 6.1 _, 6.1 a

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

• Adding a wildcard symbol may retrieve word variants: technologies 8 informal channel _ face communication 6.1 2 development 1 afrique.*.