Perhaps you should try some spelling variations:
12.11 communication » 1.1 communication, 2.14 communication, 2011 communication
developpement en » developpement et, developpement des, developpement de
technology ties » technology tieups, technology studies, technology thesis
ties population » u.s population, les populations, nations population
4 developpement » de developpement, le developpement, et developpement
fig 12.11 » fig 12.1, fig 11.1, fig 12.4
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 ties population p230 fig 12.11 communication costs 4 developpement en afrique.*.