Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
national development » international development, institutional development, social development
technology 2.2 » technology _, technology 1, technology 3
infection rate » infection rates, inflation rate
costs national » cross national, across national, gross national
2.2 infection » 2.6 infection, 2.2.1 infection, 2.2.5 infection
development l » development li, development 1, development law
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 2.2 infection rate car data communications costs national development l afrique.*.