Perhaps you should try some spelling variations:
pythons python » python python (Expand search), pitons python (Expand search), piton python (Expand search)
decrease tooth » decrease with (Expand search), decrease food (Expand search), decrease costs (Expand search)
tooth disease » mouth disease (Expand search)
pd processes » npd processes (Expand search), d processes (Expand search), and processes (Expand search)
python code » python coding (Expand search), python redes (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 tooth disease pd processes ) OR ( python code pythons python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease tooth disease pd processes ) OR ( python code pythons python programming ))*.