Perhaps you should try some spelling variations:
de l'universidade » de universidade (Expand Search), da universidade (Expand Search), de l'universite (Expand Search)
de recherche » de recherches (Expand Search), des recherches (Expand Search), la recherche (Expand Search)
travaux des » travaux du (Expand Search), travaux en (Expand Search)
travaux de » travaux du (Expand Search)
biologia e » biologia de (Expand Search), biologia y (Expand Search), biologica et (Expand Search)
e de » et de (Expand Search), y de (Expand Search), e di (Expand Search)

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: "((travaux des) OR (travaux de)) laboratorio de recherche biologia e de l'universidade madrid~".
• Adding a wildcard symbol may retrieve word variants: ((travaux des) OR (travaux de)) laboratorio de recherche biologia e de l'universidade madrid*.