Perhaps you should try some spelling variations:
2.30 communication » 2.3 communication, 2.7 communication, 1.3 communication
development east » development southeast, development 1
technology ties » technology tieups, technology studies, technology thesis
ties population » u.s population, les populations, nations population
population per » population panel, population p230, population area
de development » e development, ce development, de developpement
east 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 ties population per fig 2.30 communication costs de development east fabrique.*.