Perhaps you should try some spelling variations:
decrease mortality » decreases mortality (Expand search), decreased mortality (Expand search), increase mortality (Expand search)
decrease rapidly » disease rapidly (Expand search), decrease lipid (Expand search)
rapidly decrease » rapid increase (Expand search), brazil decrease (Expand search), taping decrease (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decreased to (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » and decrease (Expand search), can increase (Expand search), to decrease (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease rapidly decrease toc decrease ) OR ( decrease can decrease mortality AND ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease rapidly decrease toc decrease ) OR ( decrease can decrease mortality and ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rapidly decrease toc decrease ) OR ( decrease can decrease mortality and ))*.