Perhaps you should try some spelling variations:
sanitation solution » sanitation solutions, sanitation situation, sanitation promotion
13 communication » 3 communication, 1 communication, 10 communication
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
technologies a » technologies _, technologies 4, technologies 2
a sanitation » _ sanitation, can sanitation, pay sanitation
solution six » solution i, solution iv, solution film
costs a » costs _, costs 4
six 13 » six 23

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

• Adding a wildcard symbol may retrieve word variants: technologies a sanitation solution six 13 communication costs a developpement en afrique.*.