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 et » developpement des, developpement de, development east
population area » population age, population africa, population share
et afrique » en afrique, l afrique
area fig » area cir
fig 2.15 » fig 2.1, fig 2.35, fig 12.11
costs de » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology thesis population area fig 2.15 communication costs de developpement et afrique.*.