Perhaps you should try some spelling variations:
2.14 communication » 2.4 communication, 5.4 communication, 2.3 communication
technology trade » technology trends, technology transfer, technology transfers
trade population » create population, france population, age population
et developpement » de developpement, le developpement, test development
developpement l » developpement il, developpement la, developpement de
population per » population panel, population p230, population area
l afrique » en afrique
fig 2.14 » fig 2.1, fig 2.4, fig 2.15
costs et » costs _, costs 4, costs a
per fig » per firm

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 2.14 communication costs et developpement l afrique.*.