Perhaps you should try some spelling variations:
2.15 communication » 2.14 communication, 2.5 communication, 2.3 communication
thesis population » ties population, texas population, species population
de developpement » sme development
developpement du » developpement de, developpement des, developpement et
population per » population panel, population p230, population area
du fabrique » la fabrique
fig 2.15 » fig 2.1, fig 2.35, fig 12.11
costs de » 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 thesis population per fig 2.15 communication costs de developpement du fabrique.*.