Perhaps you should try some spelling variations:
their decreased » the decreased (Expand search), the decrease (Expand search), tumors decreased (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
decreased il » decreased in (Expand search), increased il (Expand search), decreased risk (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (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 their decreased il decrease ) OR ( decrease of decrease AND classicals ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease their decreased il decrease ) OR ( decrease of decrease AND classicals ))*.