Perhaps you should try some spelling variations:
5.4 communication » de communication, data communication
formulation over » formation over, formulation model, formulation where
developpement et » developpement des, developpement de, development east
l developpement » le developpement, de developpement, et developpement
et afrique » en afrique, l afrique
over do » over de, ever do, over die
do 5.4 » df 5.4, do 5.2, go 5.4
a l » a la

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

• Adding a wildcard symbol may retrieve word variants: technologies _ formulation over do 5.4 communication a l developpement et afrique.*.