Perhaps you should try some spelling variations:
python theory » action theory (Expand search), python tutor (Expand search)
theory python » the python (Expand search), theory path (Expand search), theory person (Expand search)
coder python » codigo python (Expand search), compra python (Expand search)
python based » action based (Expand search)
based lambda » laser lambda (Expand search), and lambda (Expand search), typed lambda (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: "(( coder python theory python programming ) OR ( python based lambda python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder python theory python programming ) OR ( python based lambda python programming ))*.