Perhaps you should try some spelling variations:
mental development » mineral development, capital development, spatial development
technology's role » technology role
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
role inflation » core inflation, rate inflation, price inflation
development li » development lid, development lie, development lin
costs mental » costs meat, costs rent
li afrique » l afrique, en afrique
race 4.1 » race 4.10, rice 4.1, race 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology's role inflation _ race 4.1 communication costs mental development li afrique.*.