Perhaps you should try some spelling variations:
depressed operation » depressed person (Expand search), repressive operations (Expand search)
operation process » operational process (Expand search), cooperation process (Expand search), separation process (Expand search)
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), disease during (Expand search)
decrease pain » decreases pain (Expand search), decrease in (Expand search), decreased brain (Expand search)
pain decrease » can decrease (Expand search), taping decrease (Expand search), brain decreases (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)

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 during depressed operation process ) OR ( decrease pain decrease toc decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during depressed operation process ) OR ( decrease pain decrease toc decrease ))*.