Perhaps you should try some spelling variations:
decreased changes » increased challenges (Expand search)
changes decrease » changes increase (Expand search), change increase (Expand search), recharge decrease (Expand search)
dose processes » noise processes (Expand search), coke processes (Expand search), use processes (Expand search)
pythons python » python python (Expand search), pitons python (Expand search), piton python (Expand search)
decrease dose » decrease due (Expand search), decrease costs (Expand search), decrease model (Expand search)
api pythons » api python (Expand search)
python api » python 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 changes decrease dose processes ) OR ( python api pythons python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased changes decrease dose processes ) OR ( python api pythons python programming ))*.