Perhaps you should try some spelling variations:
population factors » population facts, population sector, population centers
3 communication » 4 communication, de communication, data communication
technology set » technology sector, technology 1, technology 2.2
set population » meet population, de population, em population
factors prices » factor prices, factors process, factor price
4 developing » 3 developing
developing a » developing _
a afrique » l afrique, en afrique
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 set population factors prices 3 communication costs 4 developing a afrique.*.