Perhaps you should try some spelling variations:
decrease break » decreases breast (Expand search), decreases areas (Expand search), decrease treg (Expand search)
break decrease » urea decrease (Expand search)
decrease sites » decrease its (Expand search), decrease litter (Expand search), decrease after (Expand search)
sites affected » is affected (Expand search), soils affected (Expand search), city affected (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to decrease (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)

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 rate decrease break decrease ) OR ( decrease AND decrease sites affected ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease rate decrease break decrease ) OR ( decrease and decrease sites affected ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rate decrease break decrease ) OR ( decrease and decrease sites affected ))*.