Perhaps you should try some spelling variations:
overview population » overall population, overview location, overview motivation
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
method overview » methods overview
takes place » taken place, take place
place de » place _
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: method overview population takes place de communication costs au developpement de l'afrique.*.