Perhaps you should try some spelling variations:
technologies basic » technologies based, technologies bit, technologies big
basic formulation » basic population, bayesian formulation, policy formulation
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
formulation 3 » formulation _, formulations _, formulating _
3 doing » _ doing, 5 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 basic formulation 3 doing _ communication costs 4 developpement de l'afrique.*.