Perhaps you should try some spelling variations:
"and optimization python python programming" » "and optimization method python programming" (Expand search), "and optimization option python programming" (Expand search), "and optimization methods python programming" (Expand search), "and optimization pythons python programming" (Expand search), "and optimization piton python programming" (Expand search), "and optimization pitons python programming" (Expand search)
"coder estimation errors coding program" » "coder estimation methods coding program" (Expand search), "coder medication errors coding program" (Expand search), "coder estimation from coding program" (Expand search), "model estimation errors coding program" (Expand search), "power estimation errors coding program" (Expand search), "color estimation errors coding program" (Expand search), "coder estimation errors cloning program" (Expand search), "coder estimation errors loading program" (Expand search), "coder estimation errors cooling programs" (Expand search), "coder estimation error coding program" (Expand search), "coder estimation errors using program" (Expand search), "coder estimation errors during program" (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 estimation errors coding program") OR ("and optimization python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder estimation errors coding program\") OR (\"and optimization python python programming\"))*".
• Removing quotes may allow a broader search: (( coder estimation errors coding program ) OR ( and optimization python python programming ))*.