Perhaps you should try some spelling variations:
integration models » integration model, interaction models, integrative model
technology trade » technology trends, technology transfer, technology transfers
de communication » mobile communication, online communication
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
models rate » models state, models re, models latent
l afrique » en afrique
rate de » rate due, rate debt, rate does
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: technology trade integration models rate de communication costs 4 developpement l afrique.*.