Perhaps you should try some spelling variations:
"coder coder complexity contract program" » "coder coder complexity constraint program" (Expand search), "coder coder complexity control program" (Expand search), "coder coder complex contract program" (Expand search), "coder code complexity contract program" (Expand search), "coder model complexity contract program" (Expand search), "coder lower complexity contract program" (Expand search), "coder coder complexity contrato programa" (Expand search), "coder coder complexity contratos programa" (Expand search), "coder decoder complexity contract program" (Expand search), "code code complexity contract program" (Expand search), "decoder codec complexity contract program" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder complexity contract program") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complexity contract program\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complexity contract program ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity contract program") OR ("on python python python programming"))*.