Perhaps you should try some spelling variations:
the preprocessing » the processing (Expand search), their processing (Expand search), image preprocessing (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
or decreased » or decrease (Expand search), of decreased (Expand search), or decreases (Expand search)
decreased il » decreased in (Expand search), increased il (Expand search), decreased risk (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease and (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or decrease (Expand search)
decrease or » decrease of (Expand search), decrease pro (Expand search), decrease toc (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (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 on decrease the preprocessing ) OR ( decrease OR decreased il decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease on decrease the preprocessing ) OR ( decrease or decreased il decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease on decrease the preprocessing ) OR ( decrease or decreased il decrease ))*.