Perhaps you should try some spelling variations:
rural populations » rural population
technology rural » technology moral, technology neutral, technology road
3 communication » 4 communication, de communication, data communication
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
populations 2 » populations _, populations a, populations 1
l afrique » en afrique
2 prices » 2 price, 2 proces, do prices
prices 3 » prices _, prices a, prices 4
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology rural populations 2 prices 3 communication costs 4 developpement l afrique.*.