Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
information costs » information contents, information centers, information content
technologies can » technologies a, technologies co, technologies _
can information » von information, von informationen
communication 2 » communication _, communication a, communication 3
2.1 downward » 2.5 downward, 5.4 downward, 14.7 downward
des afrique » en afrique, de l'afrique
costs 2.1 » costs 2.3, costs 4.1, costs 2.2

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

• Adding a wildcard symbol may retrieve word variants: technologies can information costs 2.1 downward communication 2 _ developpement des afrique.*.