Perhaps you should try some spelling variations:
12.11 communication » 1.1 communication, 2.14 communication, 2011 communication
4.2 developpement » 4.2 development, de developpement, le developpement
developpement la » developpement de, developpement et, developpement du
technology vas » technology vi, technology vt, technology 21st
vas population » fast population, mass population, wars population
la afrique » l afrique, la fabrique, en afrique
fig 12.11 » fig 12.1, fig 11.1, fig 12.4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology vas population p230 fig 12.11 communication costs 4.2 developpement la afrique.*.