Perhaps you should try some spelling variations:
decreased with » decreases with (Expand search), decrease with (Expand search), increased with (Expand search)
its professors » with professors (Expand search), in professors (Expand search), to professors (Expand search)
the decreased » the decrease (Expand search), the deceased (Expand search), the increased (Expand search)
with decrease » with decreased (Expand search), with deceased (Expand search), with increase (Expand search)
decrease toc » decrease of (Expand search), decreased to (Expand search), decrease on (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (Expand search)
decrease its » decreases its (Expand search), decrease with (Expand search), decrease in (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (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 toc decrease its professors ) OR ( decrease the decreased with decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease toc decrease its professors ) OR ( decrease the decreased with decrease ))*.