Perhaps you should try some spelling variations:
technological chain » technological change, technological choice, technological gains
data communication » data communications
chain innovation » chain integration, open innovation, green innovation
au developpement » du developpement, de developpement, le developpement
innovation 4 » innovation _, innovation a, innovation 1
des afrique » en afrique, de l'afrique
case data » cases data, base data, use data
costs au » costs a, costs amy, costs _

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

• Adding a wildcard symbol may retrieve word variants: technological chain innovation 4 case data communication costs au developpement des afrique.*.