Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
1.4 communications » 1.4 communication, 14 communications, 5.4 communication
technology change » technological change, technological changes
change inflation » change information, change innovation, change simulation
inflation und » inflation index, inflation _, inflation tax
developing li » developing ai, developing l2, developing cil
4 developing » 3 developing
li afrique » l afrique, en afrique
und case » und care, und cash, id case
case 1.4 » case 12.4, case 4.4, case 2.4
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology change inflation und case 1.4 communications costs 4 developing li afrique.*.