Perhaps you should try some spelling variations:
technologies based » technologies used, technology based, technologies a
based formulacion » basic formulation, case formulation, based simulation
developpement du » developpement de, developpement des, developpement et
4 communication » 3 communication, 5.4 communication, de communication
formulacion de » formulation des, formacion de, formulation _
du afrique » en afrique, l afrique, de l'afrique
de using » die using, we using, re 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 based formulacion de using 4 communication costs _ developpement du afrique.*.