Perhaps you should try some spelling variations:
overall population » rural population, general population
population takes » population target, population age, population based
de communication » mobile communication, online communication
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
takes place » taken place, take place
place de » place _
costs au » costs a, costs amy, costs _
method » methods

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

• Adding a wildcard symbol may retrieve word variants: method overall population takes place de communication costs au developpement de l'afrique.*.