Perhaps you should try some spelling variations:
technologies based » technologies used, technology based, technologies a
based formulation » basic formulation, case formulation, based simulation
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
formulation zu » formulation du, formulation _, formulation 3
zu doing » fun doing, _ doing, 3 doing
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies based formulation zu doing _ communication costs 4 developpement de l'afrique.*.