Perhaps you should try some spelling variations:
decreased toxin » decreased in (Expand search), decreased to (Expand search), decreased total (Expand search)
toxin decrease » strain decrease (Expand search), to decrease (Expand search)
methods python » methods action (Expand search), pythons python (Expand search), methods method (Expand search)
based methods » based method (Expand search), mixed methods (Expand search), and methods (Expand search)
on processes » fenton processes (Expand search)
python based » action based (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease and (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 toxin decrease on processes ) OR ( python based methods python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased toxin decrease on processes ) OR ( python based methods python programming ))*.