Perhaps you should try some spelling variations:
decrease first » disease first (Expand search), decrease risk (Expand search), decrease its (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
first object » first objects (Expand search), direct object (Expand search), first direct (Expand search)
decrease by » decreased by (Expand search), decrease in (Expand search), decrease of (Expand search)
by decrease » by decreased (Expand search), may decrease (Expand search), any decrease (Expand search)

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

• Removing quotes may allow a broader search: (( decrease and decrease and decrease ) OR ( decrease by decrease first object ))~.