Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
information costs » information contents, information centers, information content
communication 5.5 » communication 3.3, communication 2.4, communication 3.2
technologies 4 » technologies _
4 information » 2 information, 1 information
de downward » _ downward, a downward, 2.5 downward
costs de » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information costs de downward communication 5.5 _ development latin afrique.*.