Perhaps you should try some spelling variations:
population center » population census, population censuses, population change
day communication » way communication, daily communication, data communication
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
technology de » technology does, technology dlt, technology 1
de population » do population, deer population, does population
center trade » century trade, better trade, centre trade
trade day » trade data, trade date, trade a
l afrique » en afrique
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology de population center trade day communication costs a developpement l afrique.*.