Perhaps you should try some spelling variations:
discharge external » discharges external (Expand search), discharge material (Expand search), discourse external (Expand search)
external processes » internal processes (Expand search), external processing (Expand search), material processes (Expand search)
of discharge » glow discharge (Expand search), post discharge (Expand search), and discharge (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)
decrease of » decrease in (Expand search)
python code » python coding (Expand search), python redes (Expand search)
code piton » code position (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease of discharge external processes ) OR ( python code piton python programming ))~.