Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
transfer infection » transfer innovation, transfer function, transfer reduction
3 communications » 3 communication, 2 communications, 4 communications
infection data » infection rate, infection rates, section data
development l » development li, development 1, development law
data rich » data which, data right, data race
l afrique » en afrique
costs a » costs _, costs 4
rich 3 » reich 3, rich _, rich 5

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

• Adding a wildcard symbol may retrieve word variants: technology transfer infection data rich 3 communications costs a development l afrique.*.