Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technology valuation » technology evaluation, technology evolution, technology solution
valuation equation » evaluation evaluation, evolution equations
4 communications » 14 communications, 4 communication, 2 communications
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
equation 18.1 » equation 14.1, equation 4.8.1, equations 10.1
18.1 rate » 16.1 rate
l afrique » en afrique
costs a » costs _, costs 4
rate 4 » rate _

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

• Adding a wildcard symbol may retrieve word variants: technology valuation equation 18.1 rate 4 communications costs a developpement l afrique.*.