Perhaps you should try some spelling variations:
2.30 communication » 2.3 communication, 2.7 communication, 1.3 communication
thesis population » ties population, texas population, species population
de developpement » sme development
developpement et » developpement des, developpement de, development east
population per » population panel, population p230, population area
et fabrique » la fabrique
fig 2.30 » fig 2.3, fig 2.35, fig 2.39
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 2.30 communication costs de developpement et fabrique.*.