Perhaps you should try some spelling variations:
decreased levels » increased levels (Expand search)
levels decrease » levels increase (Expand search), leaves decrease (Expand search), levels increased (Expand search)
dose processes » noise processes (Expand search), coke processes (Expand search), use processes (Expand search)
decrease dose » decrease due (Expand search), decrease costs (Expand search), decrease model (Expand search)
python based » action based (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)
based piton » based proton (Expand search), based photon (Expand search), based pilot (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 levels decrease dose processes ) OR ( python based piton python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased levels decrease dose processes ) OR ( python based piton python programming ))*.