Perhaps you should try some spelling variations:
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
pre processing » the processing (Expand search), image processing (Expand search)
depressed pre » depressed area (Expand search), depressao pre (Expand search), depressed the (Expand search)
decrease may » decrease at (Expand search), decrease by (Expand search), decrease human (Expand search)
may decrease » may increase (Expand search), can decrease (Expand search), and decrease (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 pre processing ) OR ( decrease may decrease to decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during depressed pre processing ) OR ( decrease may decrease to decrease ))*.