Perhaps you should try some spelling variations:
6.2.4.1 communication » 6.2.4.2 communication, 6.2.4.3 communication, 11.4.1 communication
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
prices 6.2.4.1 » prices 2.2.5.7, prices 2.3.1
technology 12 » technology 1.2, technology 1, technology 2
inflation tax » inflation rate, inflation _, inflation target
12 inflation » 10 inflation, 2 inflation, 3.2 inflation
tax prices » gas prices, car prices, tax practices
de afrique » de l'afrique, en afrique, 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 12 inflation tax prices 6.2.4.1 communication costs a developpement de afrique.*.