Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
open development » clean development, driven development, human development
technology 5.33 » technology 5.3, technology 5.3.1, technology 2.3
development law » development latin, development 1
5.33 inflation » 3.3.3 inflation, 5.4.3 inflation, 2.3 inflation
inflation und » inflation index, inflation _, inflation tax
law afrique » l afrique
costs open » cost open, costs over
case data » cases data, base data, use data
und case » und care, und cash, id case

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

• Adding a wildcard symbol may retrieve word variants: technology 5.33 inflation und case data communications costs open development law afrique.*.