Perhaps you should try some spelling variations:
population factors » population facts, population sector, population centers
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
development east » development southeast, development 1
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 development » 2 development, 4 developing
east afrique » east africa, east african, en afrique
prices 4.2 » prices 3.2, prices 4.6, prices 4.9
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 4.2 communication costs 4 development east afrique.*.