Perhaps you should try some spelling variations:
technology creates » technology increases, technology related, technology centres
creates population » create population, crises population, area population
3.2 communication » 3 communication, 2.3 communication, de communication
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
population per » population panel, population p230, population area
per fig » per firm
fig 3.2 » fig 5.2, fig 2.2, fig 3.1
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 creates population per fig 3.2 communication costs 4 developpement de l'afrique.*.