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)
price decrease » price increase (Expand search), juice decreases (Expand search), price increases (Expand search)
their disease » the disease (Expand search), hair diseases (Expand search)
disease price » disease rice (Expand search), disease pre (Expand search), diseases rice (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 NOT decrease at preprocessing ) OR ( decrease their disease price decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease NOT decrease at preprocessing ) OR ( decrease their disease price decrease ))*.