Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
transfer infection » transfer innovation, transfer function, transfer reduction
a communications » a communication, data communications, a communicative
infection ratio » infection rates, infection rate, infection data
development li » development lid, development lie, development lin
ratio price » option price
li afrique » l afrique, en afrique
price a » price _, price 3, price cap
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology transfer infection ratio price a communications costs a development li afrique.*.