Perhaps you should try some spelling variations:
base preprocessing » based preprocessing (Expand search), image preprocessing (Expand search), noise preprocessing (Expand search)
decreased base » decreased bone (Expand search), decreased brain (Expand search), decreased risk (Expand search)
and decreased » and decreases (Expand search), and increased (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
decrease can » decrease in (Expand search), decrease on (Expand search), decreases pecan (Expand search)
can decrease » can increase (Expand search), and decrease (Expand search), to decrease (Expand search)
decrease at » decrease akt (Expand search), decrease in (Expand search), decrease of (Expand search)
at decrease » rate decrease (Expand search), that decrease (Expand search), and decrease (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease AND decreased base preprocessing ) OR ( decrease can decrease at decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease and decreased base preprocessing ) OR ( decrease can decrease at decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease and decreased base preprocessing ) OR ( decrease can decrease at decrease ))*.