Perhaps you should try some spelling variations:
technologies used » technologies based, technology used, technologies _
used formulation » mixed formulation, case formulation, et formulation
developpement du » developpement de, developpement des, developpement et
formulation des » formation des, formulacion de, formulation _
4 communication » 3 communication, 5.4 communication, de communication
du afrique » en afrique, l afrique, de l'afrique
des using » es using, codes using, deals using
using 4 » using 4d, using _, using a

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

• Adding a wildcard symbol may retrieve word variants: technologies used formulation des using 4 communication costs _ developpement du afrique.*.