Perhaps you should try some spelling variations:
5.4 communication » de communication, data communication
test development » forest development, port development, mena development
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
development du » development d, development ds, developpement du
costs test » costs cost
du afrique » en afrique, l afrique, de l'afrique
per fig » per firm
fig 5.4 » fig 5.2, fig 5.1, fig 5.3

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 5.4 communication costs test development du afrique.*.