Perhaps you should try some spelling variations:
violent processes » violenta processos (Expand search), viot processes (Expand search), violent protests (Expand search)
decrease violent » decreases violence (Expand search)
method python » method method (Expand search), python python (Expand search)
python based » action based (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 violent processes ) OR ( python based method python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease of decrease violent processes ) OR ( python based method python programming ))*.