Perhaps you should try some spelling variations:
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
technology hard » technology has, technology have, technology hydro
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
hard inflation » aid inflation, has inflation, hybrid inflation
inflation co » inflation can, inflation rob, inflation von
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1
co prices » do prices, co primes, coal prices
l afrique » en 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 hard inflation co prices 3.1 communication costs a developpement l afrique.*.