Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
mine development » sme development, trade development, business development
inflation rates » inflation rate
technology low » technology flow, technology law, technology led
development en » developpement en, development menu, development eco
low inflation » core inflation, _ inflation
rates figure » wages figure, prices figure, areas figure
figure 4.1 » figure 2.1, figure 2.2
costs mine » costs money, costs timing

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

• Adding a wildcard symbol may retrieve word variants: technology low inflation rates figure 4.1 communication costs mine development en afrique.*.