Perhaps you should try some spelling variations:
technological chain » technological change, technological choice, technological gains
chain innovation » chain integration, open innovation, green innovation
innovation cases » innovation case, innovation based, innovations case
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
data de » data den, data die, data do
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technological chain innovation cases data de communication costs a developpement en afrique.*.