Perhaps you should try some spelling variations:
plants competition » plan competition, plants compensation, arts competition
developpement de » developpement des, developpement durable
innovations a » innovations _, innovations china, innovations japan
de africa » does africa, de america, use africa
a rice » _ rice, a rich, 3 rice
1.3 la » 2.3 la
1.3 le » 1.3 les

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: "technology _ innovations a rice plants competition ((1.3 la) OR (1.3 le)) developpement de africa.~".
• Adding a wildcard symbol may retrieve word variants: technology _ innovations a rice plants competition ((1.3 la) OR (1.3 le)) developpement de africa.*.