Perhaps you should try some spelling variations:
ciruxia toracicas » cirugia toracica (Expand Search), cirugia practicas (Expand Search)
ciruxia toracica » cirugia toracica (Expand Search), cardio toracica (Expand Search)
medicine ejgm » medicine ed (Expand Search)
medicine dm » medicine dcm (Expand Search), medicine du (Expand Search), medicine mm (Expand Search)
revista a » revista da (Expand Search), revista d (Expand Search), revista e (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: revista a ((medicine dm) or (medicine ejgm)) ((ciruxia toracicas) or (ciruxia toracica))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: revista a ((medicine dm) OR (medicine ejgm)) ((ciruxia toracicas) OR (ciruxia toracica)).
• Adding a wildcard symbol may retrieve word variants: revista a ((medicine dm) or (medicine ejgm)) ((ciruxia toracicas) or (ciruxia toracica))*.