Perhaps you should try some spelling variations:
2.3.5 communication » 2.3 communication, 2.2.3 communication, 2.5 communication
inflation biomass » inflation bias, inflation boys, inflation gross
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
technology 2.1 » technology 2.2, technology 3.1, technology 1
biomass prices » biomass price
2.1 inflation » 2.3 inflation, 2.3.1 inflation, 2 inflation
prices 2.3.5 » prices 2.3.1, prices 2.3.4, prices 2.3.6
l afrique » en 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 2.1 inflation biomass prices 2.3.5 communication costs a developpement l afrique.*.