Perhaps you should try some spelling variations:
mathematiques ram » mathematiques de
mathematiques et » mathematiques de, mathematique ram
sciences man » sciences many, sciences may, sciences men
sciences max » sciences may, sciences many, sciences made
et sciences » en sciences, et science, des sciences
sciences de » sciences data

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: (( mathematiques ram ((sciences man) OR (sciences max)) l'homme ) OR ( mathematiques et sciences de l'homme )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mathematiques ram ((sciences man) OR (sciences max)) l'homme ) or ( mathematiques et sciences de l'homme ))".
• Adding a wildcard symbol may retrieve word variants: (( mathematiques ram ((sciences man) OR (sciences max)) l'homme ) or ( mathematiques et sciences de l'homme ))*.