Perhaps you should try some spelling variations:
technologies fairs » technologies fail, technologies failure, technologies varies
fairs information » fair information, aids information, dis information
information costs » information contents, information centers, information content
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
3 communication » 4 communication, de communication, data communication
communication 4 » communication _, communication a, communication 3
costs down » costs how
down 3 » down _, down a
4 der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technologies fairs information costs down 3 communication 4 der developpement en afrique.*.