Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
technology change » technological change, technological changes
change inflation » change information, change innovation, change simulation
inflation und » inflation index, inflation _, inflation tax
4 development » 2 development, 4 developing
development e » development 1, development eco, development 11
e afrique » en afrique, l afrique, de l'afrique
und case » und care, und cash, id case
case 3.1 » case 4.1, case 3.2, case 1
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 3.1 communications costs 4 development e afrique.*.