Perhaps you should try some spelling variations:
total preprocessing » textual preprocessing (Expand search), data preprocessing (Expand search), novel preprocessing (Expand search)
that decreased » the decreased (Expand search), has decreased (Expand search), than decrease (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), not decrease (Expand search)
decrease to » decrease toc (Expand search), decreased to (Expand search), decrease the (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 that decreased total preprocessing ) OR ( decrease that decrease to decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease that decreased total preprocessing ) OR ( decrease that decrease to decrease ))*.