Perhaps you should try some spelling variations:
the preprocessing » the processing (Expand search), their processing (Expand search), image preprocessing (Expand search)
owing decreases » logging decreases (Expand search), ageing decreases (Expand search), taping decreases (Expand search)
decrease owing » decrease lodging (Expand search), decrease during (Expand search), decrease in (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decreased to (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not 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 owing decreases the preprocessing ) OR ( decrease toc decrease AND decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease owing decreases the preprocessing ) OR ( decrease toc decrease AND decrease ))*.