Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
technology world » technology work, technological world, technology working
developpement du » developpement de, developpement des, developpement et
4 developpement » de developpement, le developpement, et developpement
population tb » population b, population _, population 1
prices 2.3 » price 2.3, prices 2.4, prices 2.1
du afrique » en afrique, l afrique, de l'afrique
tb prices » do prices, 2 prices
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 world population tb prices 2.3 communication costs 4 developpement du afrique.*.