Perhaps you should try some spelling variations:
refractive programs » reactive programs (Expand search), reproductive programs (Expand search), effective program (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)
method refractive » method effective (Expand search), the refractive (Expand search), to refractive (Expand search)
python ratio » python data (Expand search), python api (Expand search), python to (Expand search)
ratio method » rational method (Expand search), carlo method (Expand search), iteration method (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to 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 of decrease decrease processes ) OR ( python ratio method refractive programs ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease of decrease decrease processes ) OR ( python ratio method refractive programs ))*.