Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
population based » population age, simulation based, population data
2 communications » 2 communication, 3 communications, 4 communications
au developpement » du developpement, de developpement, le developpement
technology high » technology rights, technology how, technology help
developpement l » developpement il, developpement la, developpement de
based case » based care, base case, based phase
l afrique » en afrique
costs au » costs a, costs amy, costs _
case 2 » case 1

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

• Adding a wildcard symbol may retrieve word variants: technology high population based case 2 communications costs au developpement l afrique.*.