Perhaps you should try some spelling variations:
rats decreases » and decreases (Expand search), but decreases (Expand search), stress decreases (Expand search)
decrease rats » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
decreases of » decreases in (Expand search), decreases _ (Expand search), decreases c (Expand search)
decrease new » decrease need (Expand search), decrease low (Expand search), decreased need (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (Expand search)
decrease il » decreased il (Expand search), decrease in (Expand search), decrease hiv (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (Expand search)
new objects » new subjects (Expand search), new objective (Expand search), belt objects (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease rats decreases of decrease ) OR ( decrease il decrease new objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rats decreases of decrease ) OR ( decrease il decrease new objects ))*.