Perhaps you should try some spelling variations:
stents safety » agents safety, events safety, tenth safety
safety study » safety studies, safety stock
filosofia da » filosofia del, filosofia e, filosofia della
filosofia de » filosofia del
study la » study law, study lay, study lca

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: "stents safety study la ((filosofia da) OR (filosofia de)) literatura*".