Perhaps you should try some spelling variations:
operative procedures » operating procedures (Expand search), operating procedure (Expand search), iterative procedure (Expand search)
decrease processes » disease processes (Expand search), decay processes (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decrease sucrose (Expand search)
python operative » non operative (Expand search), pos operative (Expand search), on operative (Expand search)
decrease std » decrease sod (Expand search), decrease and (Expand search), decrease at (Expand search)
std decrease » to decrease (Expand search), and decrease (Expand search), spp decrease (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 std decrease decrease processes ) OR ( python script python operative procedures ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease std decrease decrease processes ) OR ( python script python operative procedures ))*.