Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
technology 6.7 » technology 6.3, technology 6.1, technology 1.7
inflation coal » inflation can, inflation co, inflation tax
6.7 inflation » 9.7 inflation, 10.7 inflation, 2.3 inflation
coal prices » oil prices, cereal prices
prices 2.3 » price 2.3, prices 2.4, prices 2.1
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 6.7 inflation coal prices 2.3 communication costs a developpement de afrique.*.