Perhaps you should try some spelling variations:
2.22 communication » 2.2 communication, 2.2.3 communication, 4.2.2 communication
developpement roth » developpement et, development ruth, developpement rural
technology trade » technology trends, technology transfer, technology transfers
trade inflation » grade inflation, trade insulation, rate inflation
inflation gopi » inflation good, inflation gross, inflation pt
roth fabrice » rouah fabrice
gopi fig » goal fig
fig 2.22 » fig 2.2, fig 2.2a, fig 2.2b

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

• Adding a wildcard symbol may retrieve word variants: technology trade inflation gopi fig 2.22 communication costs _ developpement roth fabrice.*.