Perhaps you should try some spelling variations:
vascular prosthesis » ocular prosthesis (Expand search)
decrease vascular » decreases vascular (Expand search), increased vascular (Expand search), increases vascular (Expand search)
decrease costs » decreasing costs (Expand search), decreases post (Expand search), disease costs (Expand search)
costs increase » cost increase (Expand search), posts increase (Expand search), cows increase (Expand search)
increase life » increasing life (Expand search), increase bone (Expand search), increase due (Expand search)
life decrease » life decreases (Expand search), life decreased (Expand search), life increase (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or decrease (Expand search)

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: "(( decrease on decrease vascular prosthesis ) OR ( decrease costs increase life decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease on decrease vascular prosthesis ) OR ( decrease costs increase life decrease ))*.