Perhaps you should try some spelling variations:
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
during decrease » during increased (Expand search), during depressed (Expand search), during disease (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decreased to (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (Expand search)
decrease ro » decrease pro (Expand search), decreases ros (Expand search), decrease low (Expand search)
ro effect » to effect (Expand search), lo effect (Expand search), coo effect (Expand search)

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

• Removing quotes may allow a broader search: (( decrease during decrease _ decrease ) OR ( decrease toc decrease ro effect ))~.