Perhaps you should try some spelling variations:
populations values » populations changes, populations pauvres, population issues
values tolerance » values governance, fault tolerance, value relevance
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
1 populations » _ populations, 1 population, 2 populations
technology 1 » technology _
de afrique » de l'afrique, en afrique, l 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 1 populations values tolerance _ communication costs a developpement de afrique.*.