Perhaps you should try some spelling variations:
technologies based » technologies used, technology based, technologies a
based formulation » basic formulation, case formulation, based simulation
de communication » mobile communication, online communication
le developpement » de developpement, sme development
developpement l » developpement il, developpement la, developpement de
formulation de » formulation des, formulacion de, formulation du
l afrique » en afrique
de using » die using, we using, re using
using de » using dea, using dem, using due
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologies based formulation de using de communication costs le developpement l afrique.*.