Perhaps you should try some spelling variations:
the preprocessing » the processing (Expand search), their processing (Expand search), image preprocessing (Expand search)
faster decreased » faster decrease (Expand search), after deceased (Expand search), waste decrease (Expand search)
decrease faster » decrease after (Expand search), decrease further (Expand search), decreased after (Expand search)
decreased risk » increased risk (Expand search), decreased in (Expand search)
risk decrease » risk decreases (Expand search), risk increase (Expand search), break decrease (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (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 of decrease the preprocessing ) OR ( decrease faster decreased risk decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease of decrease the preprocessing ) OR ( decrease faster decreased risk decrease ))*.