Perhaps you should try some spelling variations:
technological gains » technological gaps, technological basis, ecological gains
gains innovation » chains innovation, chains innovations, basics innovation
innovation cases » innovation case, innovation based, innovations case
do communication » do communications, de communication, ngo communication
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
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 gains innovation cases data do communication costs a developpement en afrique.*.