Perhaps you should try some spelling variations:
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
rice development » mine development, site development, service development
technology 4ir » technology 4, technology 4.1, technology 4.2
development li » development lid, development lie, development lin
4ir inflation » der inflation, die inflation, aid inflation
costs rice » costs rise, cost price, costs risk
li afrique » l afrique, en afrique
case 5.2 » case 4.2, case 3.2, case 2

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

• Adding a wildcard symbol may retrieve word variants: technology 4ir inflation _ case 5.2 communication costs rice development li afrique.*.