Perhaps you should try some spelling variations:
decreased level » decreased levels (Expand search), increased levels (Expand search)
noise processes » these processes (Expand search), like processes (Expand search), crime processes (Expand search)
level decrease » leaves decrease (Expand search), level increase (Expand search), levels increase (Expand search)
decrease noise » decrease risk (Expand search)
methods python » methods action (Expand search), pythons python (Expand search), methods method (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: "(( decreased level decrease noise processes ) OR ( python AND methods python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased level decrease noise processes ) OR ( python AND methods python programming ))*.