Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
technology trap » technology trade, technology tax, technology than
4 developpement » de developpement, le developpement, et developpement
trap regional » trade regional, trans regional, intra regional
problems 3.2 » problem 3.2, problems 3.3, problems 2.2
des afrique » en afrique, de l'afrique
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 trap regional urban problems 3.2 communication costs 4 developpement des afrique.*.