Perhaps you should try some spelling variations:
farms competition » firms competition, arts competition, fears competition
technology 4 » technology _, technology 1, technology 3
4 innovation » 2 innovation, 3 innovation, der innovation
rice farms » rice farm, rice farmers, rice farmer
12.4 de » 12.4 deep, 12.4 das, 12.4 rdf
12.4 re » 12.4 rf, 12.4 care, 12.4 role
a rice » _ rice, a rich, 3 rice

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 4 innovation a rice farms competition ((12.4 de) OR (12.4 re)) developpement _ america.~".
• Adding a wildcard symbol may retrieve word variants: technology 4 innovation a rice farms competition ((12.4 de) OR (12.4 re)) developpement _ america.*.