Perhaps you should try some spelling variations:
extraction python » extraction method (Expand search), extraction option (Expand search), extraction methods (Expand search)
release processes » decrease processes (Expand search), related processes (Expand search), disease processes (Expand search)
decrease release » decreases disease (Expand search), decrease renal (Expand search), protease release (Expand search)
based extraction » based interaction (Expand search), phase extraction (Expand search), and extraction (Expand search)
circ decrease » virus decrease (Expand search), can decrease (Expand search), or decrease (Expand search)
python based » action based (Expand search)
code circ » code irc (Expand search), code cpc (Expand search), code cdc (Expand search)

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

• Removing quotes may allow a broader search: (( code circ decrease release processes ) OR ( python based extraction python programming ))~.