Perhaps you should try some spelling variations:
urban populations » urban population, rural populations
technology urban » technologies urban, technology uganda, sociology urban
de communication » mobile communication, online communication
et developpement » de developpement, le developpement, test development
developpement l » developpement il, developpement la, developpement de
l afrique » en afrique
price de » price _, price 3, price a
costs et » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology urban populations _ price de communication costs et developpement l afrique.*.