Perhaps you should try some spelling variations:
decrease burden » disease burden (Expand search), decrease further (Expand search)
decrease after » increase after (Expand search), disease after (Expand search)
rats decreases » and decreases (Expand search), but decreases (Expand search), stress decreases (Expand search)
after decrease » faster decrease (Expand search), after deceased (Expand search), litter decrease (Expand search)
decrease rats » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
burden object » buried object (Expand search), urban object (Expand search), broken object (Expand search)
decreases il » decreases in (Expand search), decreases l (Expand search), decreases hip (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (Expand search)

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

• Removing quotes may allow a broader search: (( decrease rats decreases il decrease ) OR ( decrease after decrease burden object ))~.