Perhaps you should try some spelling variations:
based mechanical » basic mechanical (Expand Search), basics mechanical (Expand Search), based mechanism (Expand Search)
mechanical model » mechanical models (Expand Search), biomechanical model (Expand Search), mechanical power (Expand Search)
hospital based » hospital bed (Expand Search)
model porto » model part (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 based mechanical model porto alegre~.
• Adding a wildcard symbol may retrieve word variants: hospital based mechanical model porto alegre*.