Perhaps you should try some spelling variations:
technologies based » technologies used, technology based, technologies a
based formulacion » basic formulation, case formulation, based simulation
gt communication » get communication, et communication, et communicatione
developpement et » developpement des, developpement de, development east
a developpement » au developpement, de developpement, le developpement
formulacion de » formulation des, formacion de, formulation _
et afrique » en afrique, l afrique
de using » die using, we using, re using
using gt » using gc, using art, using gis
costs a » costs _, costs 4

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 gt communication costs a developpement et afrique.*.