Perhaps you should try some spelling variations:
in preprocessing » in reprocessing (Expand search), and preprocessing (Expand search), via preprocessing (Expand search)
decrease with » decreases with (Expand search), increase with (Expand search), decrease the (Expand search)
with decrease » with decreased (Expand search), with deceased (Expand search), with increase (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt decrease » and decrease (Expand search), not decrease (Expand search), any decrease (Expand search)
in decreased » is decreased (Expand search), in deceased (Expand search), and decreased (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 with decrease in preprocessing ) OR ( decrease akt decrease in decreased ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease with decrease in preprocessing ) OR ( decrease akt decrease in decreased ))*.