Perhaps you should try some spelling variations:
cooperation costs » operation costs, cooperation across, cooperation case
a developpement » au developpement, de developpement, le developpement
information 3 » information 2
wave sector » wage sector, wave vector, waste sector
des afrique » en afrique, de l'afrique
costs a » costs _, costs 4
3 wave » _ wave, a wave, p wave

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

• Adding a wildcard symbol may retrieve word variants: technology _ information 3 wave sector cooperation costs a developpement des afrique.*.