Perhaps you should try some spelling variations:
2.2.5.4 communication » 12.2.4 communication, 2.2.3 communication, 12.4.4 communication
technology trade » technology trends, technology transfer, technology transfers
trade population » create population, france population, age population
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
population per » population panel, population p230, population area
fig 2.2.5.4 » cip 2.2.5.4, fig 2.3.1.4
de france » en france
per fig » per firm
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology trade population per fig 2.2.5.4 communication costs 4 developpement de france.*.