Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
information centers » information contents, information officers
communication 3.3 » communication _, communication a, communication 1
technologies key » technologies any, technologies know, technologies _
key information » energy information
3.8 downward » 2.5 downward, 5.4 downward, 14.7 downward
developing a » developing _
centers 3.8 » centers 2.8, centers 3.3, centers 8.8
a afrique » 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 key information centers 3.8 downward communication 3.3 _ developing a afrique.*.