Perhaps you should try some spelling variations:
2.3.5 communication » 2.3 communication, 2.2.3 communication, 2.5 communication
technology tools » technology thesis
tools population » ties population, does population, ios population
de developpement » sme development
population per » population panel, population p230, population area
des afrique » en afrique, de l'afrique
firm 2.3.5 » fem 2.3.5
per firm » per form, pr firm, payer firm
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 tools population per firm 2.3.5 communication costs de developpement des afrique.*.