Perhaps you should try some spelling variations:
2.3.1.2 communication » 2.3.1.1 communication, 2.2.5.4 communication, 3.2.3.2 communication
technology tools » technology thesis
tools population » ties population, does population, ios population
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
population per » population panel, population p230, population area
fig 2.3.1.2 » fig 2.3.1.3, fig 2.3.1.4, fig 2.3.1.5
la fabrice » la fabrique, la matrice, la farce
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 tools population per fig 2.3.1.2 communication costs 4 developpement la fabrice.*.