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), disease during (Expand search)
four protocols » four protocol (Expand search), aloud protocols (Expand search), pcr protocols (Expand search)
decrease four » decrease food (Expand search), decrease or (Expand search), decrease fear (Expand search)
decrease pro » decrease food (Expand search), decrease treg (Expand search), decrease in (Expand search)
pro decrease » to decrease (Expand search), or decrease (Expand search), price decrease (Expand search)
depressed l » depressed i (Expand search), depressed nk (Expand search), depressed 26 (Expand search)
l decrease » _ decrease (Expand search), α decrease (Expand search), to 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 l decrease ) OR ( decrease pro decrease four protocols ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during depressed l decrease ) OR ( decrease pro decrease four protocols ))*.