Perhaps you should try some spelling variations:
technologies fairs » technologies fail, technologies failure, technologies varies
fairs information » fair information, aids information, dis information
developpement et » developpement des, developpement de, development east
2 applications » 3 applications
et afrique » en afrique, l afrique
3 das » 1 das
2 das » 1 das
la 2 » law 2, lab 2, lag 2

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies fairs information _ la 2 applications ((3 das) OR (2 das)) developpement et afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies fairs information _ la 2 applications ((3 das) OR (2 das)) developpement et afrique.*.