Perhaps you should try some spelling variations:
their decreased » the decreased (Expand search), tumors decreased (Expand search)
decrease their » increase their (Expand search), decreases the (Expand search)
to professors » to professor (Expand search), the professors (Expand search), to professions (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to decrease (Expand search), and decrease (Expand search)
decreased il » decreased in (Expand search), increased il (Expand search), decreased risk (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease pro (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease the decrease to professors ) OR ( decrease their decreased il decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease the decrease to professors ) OR ( decrease their decreased il decrease ))*.