Perhaps you should try some spelling variations:
recherche economique » recherches agronomiques (Expand Search)
laboratoires rfl » laboratoires de (Expand Search), laboratoire de (Expand Search)
rfl recherche » la recherche (Expand Search), de recherche (Expand Search), et recherche (Expand Search)
economique du » economiques de (Expand Search), economique et (Expand Search)
universita di » universidad de (Expand Search), university _ (Expand Search), universitaria de (Expand Search)
travaux en » travaux des (Expand Search), travaux du (Expand Search), travaux p (Expand Search)
travaux de » travaux du (Expand Search)
du della » e della (Expand Search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((travaux en) OR (travaux de)) laboratoires rfl recherche economique du della universita di~.
• Adding a wildcard symbol may retrieve word variants: ((travaux en) or (travaux de)) laboratoires rfl recherche economique du della universita di*.