Perhaps you should try some spelling variations:
de laboratoires » des laboratoires (Expand Search), de laboratoire (Expand Search), les laboratoires (Expand Search)
laboratoires de » laboratorio de (Expand Search), laboratori de (Expand Search)
l'universita de » l'universite de (Expand Search), universita di (Expand Search), dell'universita di (Expand Search)
biologique et » biologie et (Expand Search), biologique de (Expand Search), biologiques des (Expand Search)
de sciences » des sciences (Expand Search), de science (Expand Search), d sciences (Expand Search)
biologie du » biologie et (Expand Search), biologia de (Expand Search), biologique de (Expand Search)
travaux de » travaux du (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: travaux de laboratoires de sciences ((biologique et) or (biologie du)) l'universita de madrid~.
• If you are trying to use Boolean operators, they must be ALL CAPS: travaux de laboratoires de sciences ((biologique et) OR (biologie du)) l'universita de madrid.
• Adding a wildcard symbol may retrieve word variants: travaux de laboratoires de sciences ((biologique et) or (biologie du)) l'universita de madrid*.