Perhaps you should try some spelling variations:
technology survey » technology surveys, technology curve, technology series
survey simulation » survey imputation, surface simulation, survey imputations
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
les developpement » le developpement, des developpements, leur developpement
simulation state » simulation states, simulation stage, simulation system
communication 1 » communication _, communication a, communication 3
developpement l » developpement il, developpement la, developpement de
state spaces » state space, safe spaces, state shares
spaces 6.2 » spaces 4.2, spaces 1.1, spaces 2.1
l afrique » en afrique
1 les » 2 les

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

• Adding a wildcard symbol may retrieve word variants: technology survey simulation state spaces 6.2 communication 1 les developpement l afrique.*.