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
information fama » information fake, information format, information flow
2 communications » 2 communication, 3 communications, 4 communications
developpement du » developpement de, developpement des, developpement et
e developpement » de developpement, le developpement, et developpement
du afrique » en afrique, l afrique, de l'afrique
french 2 » french _, french 5, french a
costs e » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology trade information fama french 2 communications costs e developpement du afrique.*.