Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
2.1 communications » 3.1 communications, 4.1 communication, 1.1 communication
mental development » mineral development, capital development, spatial development
risk inflation » risk information, rising inflation, risk inclination
inflation data » inflation rate, infection data, inflation das
development l » development li, development 1, development law
costs mental » costs meat, costs rent
data scarce » data source, data sparse, data sources
scarce 2.1 » space 2.1, scale 2.1
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology risk inflation data scarce 2.1 communications costs mental development l afrique.*.