Perhaps you should try some spelling variations:
dei laboratorio » del laboratorio (Expand Search), de laboratorio (Expand Search), dei laboratori (Expand Search)
des recherches » de recherches (Expand Search)
a l'universite » de l'universite (Expand Search)
de recherche » de recherches (Expand Search), la recherche (Expand Search)
travaux dei » travaux de (Expand Search), travaux des (Expand Search), travaux du (Expand Search)
biologie a » biologie _ (Expand Search), biologie van (Expand Search), biologie et (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 dei laboratorio ((de recherche) OR (des recherches)) biologie a l'universite de madrid~".
• Adding a wildcard symbol may retrieve word variants: travaux dei laboratorio ((de recherche) OR (des recherches)) biologie a l'universite de madrid*.