Perhaps you should try some spelling variations:
3.4.2 communication » 3.3.2 communication, 3.4.1 communication, 3.4.4 communication
technology channel » technology change, technology changes, technology chapter
channel simulation » change simulation, change simulations, channel modulation
simulation rates » simulation states, simulation cases, simulations notes
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
de afrique » de l'afrique, en afrique, l afrique
rates a » rates _
a 3.4.2 » 1 3.4.2, a 3.1.2, a 3.2.2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology channel simulation rates a 3.4.2 communication costs a developpement de afrique.*.