Perhaps you should try some spelling variations:
13.1 communication » 1.1 communication, 3.1 communication, 3.2 communication
risk inflation » risk information, rising inflation, risk inclination
20 development » 2 development, 2015 development, 2007 development
development li » development lid, development lie, development lin
inflation a » inflation _, inflation tax, inflation rate
li afrique » l afrique, en afrique
case 13.1 » case 3.1, case 14.1, case 13.3
costs 20 » costs 60, costs 2.3, costs 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology risk inflation a case 13.1 communication costs 20 development li afrique.*.