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 with » decreases with (Expand search), increase with (Expand search), decrease in (Expand search)
with decrease » with decreased (Expand search), with deceased (Expand search), with increase (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not increase » and increase (Expand search), an increase (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » can increase (Expand search), and decrease (Expand search), to 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 NOT increase image preprocessing ) OR ( decrease can decrease with decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not increase image preprocessing ) OR ( decrease can decrease with decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not increase image preprocessing ) OR ( decrease can decrease with decrease ))*.