Perhaps you should try some spelling variations:
volume ventilation » volume estimation, volume variation
technology volume » technologies volume, seismology volume, technology evolution
ventilation rates » ventilation modes, ventilation strategy, ventilation systems
1.4 communication » 5.4 communication, 1.1 communication, 1.3 communication
de development » e development, ce development, de developpement
development li » development lid, development lie, development lin
rates case » rates cape, states case, rates east
li afrique » l afrique, en afrique
case 1.4 » case 12.4, case 4.4, case 2.4
costs de » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology volume ventilation rates case 1.4 communication costs de development li afrique.*.