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 3.2 » technology 2.2, technology 3.1, technology 2
inflation coal » inflation can, inflation co, inflation tax
3.2 inflation » 12 inflation, 2.3 inflation, 3.2 isolation
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 3.2 inflation coal prices 2.3 communication costs a developpement de afrique.*.