Perhaps you should try some spelling variations:
trade developpement » trade developement, trade development, de developpement
information costs » information contents, information centers, information content
communications 2 » communications _, communications a, communications 5
developpement en » developpement et, developpement des, developpement de
technologies 3 » technologies _, technologies 4, technologies 2
3 information » 1 information
anne data » annex data, line data, scanner data
2 trade » 1 trade, 4 trade

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 information costs anne data communications 2 trade developpement en afrique.*.