Perhaps you should try some spelling variations:
faster decrease » rate decrease (Expand search)
decrease faster » decrease after (Expand search), decrease further (Expand search), decreased after (Expand search)
decrease burden » disease burden (Expand search), decrease further (Expand search)
burden object » buried object (Expand search), urban object (Expand search), broken object (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (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.

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