Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
information centres » information centre, information centrism, information centers
communication 3.5 » communication 23.5, communication 3.3, communication 3.2
technologies 4 » technologies _
4 information » 2 information, 1 information
developing l » developing l2, developing _, developing a
de downward » _ downward, a downward, 2.5 downward
centres de » centre de, centres _
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information centres de downward communication 3.5 _ developing l afrique.*.