Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
trade information » price information, private information, trade integration
technology trade » technology trends, technology transfer, technology transfers
developpement du » developpement de, developpement des, developpement et
information can » information case, information 1, information 1.2
a developpement » au developpement, de developpement, le developpement
can french » a french, camps french, taken french
du afrique » en afrique, l afrique, de l'afrique
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: technology trade information can french _ communications costs a developpement du afrique.*.