Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
art competition » arts competition, act competition, party competition
technology 2.2 » technology _, technology 1, technology 3
2.2 innovation » 2.3 innovation, 3 innovation, der innovation
competition 7 » competition _, competition a, competition 3
des africa » does africa, yes africa, de africa
7 leur » a leur

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 2.2 innovation ((4 time) OR (3 time)) art competition 7 leur developpement des africa.~".
• Adding a wildcard symbol may retrieve word variants: technology 2.2 innovation ((4 time) OR (3 time)) art competition 7 leur developpement des africa.*.