Perhaps you should try some spelling variations:
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
isolation system » isolation systems, innovation system, resolution system
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
technology 5.3 » technology 2.3, technology 3.3, technology 1.3
5.3 isolation » 3.3 isolation, 5.3.1 isolation, 13.3 isolation
system promes » system proofs, systems promises, system problems
promes 5.2 » process 5.2, probes 5.23, frames 5.2
l afrique » en afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 5.3 isolation system promes 5.2 communication costs 4 developpement l afrique.*.