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)
depressed field » depressed aged (Expand search)
decrease will » decrease with (Expand search), decrease cell (Expand search), decrease il (Expand search)
field object » field objects (Expand search), fields objects (Expand search), field subject (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 will decrease during depressed ) OR ( decrease during depressed field object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease will decrease during depressed ) OR ( decrease during depressed field object ))*.