Perhaps you should try some spelling variations:
model literatur » modell literatur, model literature, modelle literatur
moden literatur » boden literatur, modern literature, moderne literatur
stents safety » agents safety, events safety, tenth safety
safety study » safety studies, safety stock
de filosofia » e filosofia, di filosofia, la filosofia
study de » study die, study der, study dem

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 de filosofia ((model literatur) OR (moden literatur))".
• Adding a wildcard symbol may retrieve word variants: stents safety study de filosofia ((model literatur) OR (moden literatur))*.