Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
technology 2.2.4 » technology 1.2.4, technology 2.2.2, technology 2.2.3
20 developpement » 2007 developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
2.2.4 inflation » 2.3.1 inflation, 2.2.2.2 inflation, 2.2.2.6 inflation
inflation rates » inflation rate
rates trade » states trade, rules trade, wages trade
trade 4.1 » trade 2.2, trade 3.2
costs 20 » costs 60, costs 2.3, costs 2.1

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology 2.2.4 inflation rates trade 4.1 communication costs 20 developpement en afrique.*.