Perhaps you should try some spelling variations:
the preprocessing » the processing (Expand search), their processing (Expand search), image preprocessing (Expand search)
decrease faster » decrease after (Expand search), decrease further (Expand search), decreased after (Expand search)
faster decrease » rate decrease (Expand search)
decreases flow » decreases food (Expand search), decreases blood (Expand search), decreases brown (Expand search)
the decreases » the decrease (Expand search), the decreased (Expand search), use decreases (Expand search)
flow decrease » flow increase (Expand search), to decrease (Expand search), not decrease (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (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 faster decrease the preprocessing ) OR ( decrease the decreases flow decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease faster decrease the preprocessing ) OR ( decrease the decreases flow decrease ))*.