Perhaps you should try some spelling variations:
4.3.2 communication » 3.3.2 communication, 4.2.2 communication, 4.3 communication
education levels » education level
developpement du » developpement de, developpement des, developpement et
a developpement » au developpement, de developpement, le developpement
levels prices » level price, cereals prices, metals prices
technology 2 » technology _, technology 1, technology 3
prices 4.3.2 » prices 3.3.2, prices 14.3.4, price 6.3.2
du afrique » en afrique, l afrique, de 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 2 education levels prices 4.3.2 communication costs a developpement du afrique.*.