Perhaps you should try some spelling variations:
by preprocessing » the preprocessing (Expand search), and preprocessing (Expand search), by processing (Expand search)
that decreased » that decrease (Expand search), the decreased (Expand search), has decreased (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
decrease life » decrease liver (Expand search), increase life (Expand search), decreases liver (Expand search)
life decrease » life decreases (Expand search), life decreased (Expand search), life increase (Expand search)
decreased by » decreased in (Expand search), increased by (Expand search), decreased il (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 that decreased by preprocessing ) OR ( decrease life decrease to decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease that decreased by preprocessing ) OR ( decrease life decrease to decrease ))*.