Perhaps you should try some spelling variations:
sanitation situation » sanitation solutions, sanitation promotion, sanitation strategy
technologies can » technologies a, technologies co, technologies _
de communication » mobile communication, online communication
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
can sanitation » tank sanitation, pay sanitation, urban sanitation
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: technologies can sanitation situation _ de communication costs au developpement en afrique.*.