Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
national development » international development, institutional development, social development
infection rate » infection rates, inflation rate
costs national » cross national, across national, gross national
technology 19 » technology 1, technology 10, technology 11
development l » development li, development 1, development law
19 infection » 9 infection, 14.9 infection, _ infection
l afrique » en afrique
rate car » rate cap, rate can, rate cfr
car data » care data, war data, sar data

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

• Adding a wildcard symbol may retrieve word variants: technology 19 infection rate car data communications costs national development l afrique.*.