Perhaps you should try some spelling variations:
at preprocessing » data preprocessing (Expand search), and preprocessing (Expand search), by preprocessing (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), not decrease (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease on (Expand search)
can decrease » can increase (Expand search), and decrease (Expand search), to decrease (Expand search)
decrees that » devices that (Expand search), trees that (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (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 can decrease at preprocessing ) OR ( decrees that decrease their decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease can decrease at preprocessing ) OR ( decrees that decrease their decrease ))*.