Perhaps you should try some spelling variations:
clinical case » clinical course (Expand Search), clinical grade (Expand Search), clinical mouse (Expand Search)
clinical cost » critical cost (Expand Search), clinical course (Expand Search), clinical mouse (Expand Search)
clinical care » critical care (Expand Search), clinical course (Expand Search), clinical grade (Expand Search)
hospital usm » hospital _ (Expand Search)
alegre » dalegre (Expand Search), ralegre (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: hospital usm ((((clinical case) OR (clinical cost))) OR (clinical care)) porto alegre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hospital usm ((((clinical case) OR (clinical cost))) OR (clinical care)) porto alegre".
• Adding a wildcard symbol may retrieve word variants: hospital usm ((((clinical case) OR (clinical cost))) OR (clinical care)) porto alegre*.