Perhaps you should try some spelling variations:
image preprocessing » image processing (Expand search), images processing (Expand search), data preprocessing (Expand search)
increase image » increasing image (Expand search), increased damage (Expand search), increase impact (Expand search)
decrease life » decrease liver (Expand search), increase life (Expand search), decreases liver (Expand search)
life increase » life increases (Expand search), the increase (Expand search), rate increase (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 life increase image preprocessing ) OR ( decrease AND decrease _ decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease life increase image preprocessing ) OR ( decrease AND decrease _ decrease ))*.