Perhaps you should try some spelling variations:
2.3.1.1 communication » 2.2.5.4 communication, 3.4.1 communication, 6.2.4.1 communication
developpement il » developpement de, developpement et, developpement du
a developpement » au developpement, de developpement, le developpement
prices 2.3.1.1 » primer 2.3.1.1, prices 2.2.5.7, prices 2.3.4
inflation a » inflation _, inflation tax, inflation rate
il afrique » l afrique, en afrique
a prices » a price, 2 prices, gas prices
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 _ inflation a prices 2.3.1.1 communication costs a developpement il afrique.*.