Perhaps you should try some spelling variations:
and preprocessing » and reprocessing (Expand search), based preprocessing (Expand search), data preprocessing (Expand search)
increases during » increase during (Expand search), increases brain (Expand search)
liver increases » layer increases (Expand search), laser increases (Expand search), cover increase (Expand search)
during decrease » during increased (Expand search), during depressed (Expand search), during disease (Expand search)
decrease liver » decreases liver (Expand search), decrease litter (Expand search), decrease after (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
decrease by » decreased by (Expand search), decrease in (Expand search), decrease of (Expand search)
by decrease » by decreased (Expand search), may decrease (Expand search), any decrease (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease by decrease AND preprocessing ) OR ( decrease liver increases during decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease by decrease and preprocessing ) OR ( decrease liver increases during decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease by decrease and preprocessing ) OR ( decrease liver increases during decrease ))*.