Perhaps you should try some spelling variations:
5.3 communication » 2.3 communication, 4.3 communication, 1.3 communication
technology price » technology rich, technology voice, technology service
rice development » mine development, site development, service development
development li » development lid, development lie, development lin
inflation und » inflation index, inflation _, inflation tax
costs rice » costs rise, cost price, costs risk
li afrique » l afrique, en afrique
und case » und care, und cash, id case
case 5.3 » case 2.3, case 5.2, case 3.3

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

• Adding a wildcard symbol may retrieve word variants: technology price inflation und case 5.3 communication costs rice development li afrique.*.