Perhaps you should try some spelling variations:
preventive programs » preventive program (Expand search), prevention programs (Expand search), prevention program (Expand search)
methods preventive » authors preventive (Expand search), methods projective (Expand search), metodos preventivos (Expand search)
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decrease sucrose (Expand search)
based methods » based method (Expand search), mixed methods (Expand search), and methods (Expand search)
python based » action based (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 _ decrease decrease processes ) OR ( python based methods preventive programs ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease decrease processes ) OR ( python based methods preventive programs ))*.