Perhaps you should try some spelling variations:
validation programmes » vaccination programmes (Expand search), vaccination programme (Expand search), evaluation programme (Expand search)
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
methods validation » method validation (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)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 to decrease decrease processes ) OR ( python based methods validation programmes ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease to decrease decrease processes ) OR ( python based methods validation programmes ))*.