Perhaps you should try some spelling variations:
mental development » mineral development, capital development, spatial development
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
technology human » technology how, technology help
human inflation » human infection, human information, human infections
development li » development lid, development lie, development lin
costs mental » costs meat, costs rent
li afrique » l afrique, en afrique
rate rate » rates rates, rate ratio, rate water
rate 4.2 » rates 4.2, rate 4.3, rate 5.2

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

• Adding a wildcard symbol may retrieve word variants: technology human inflation rate rate 4.2 communication costs mental development li afrique.*.