Perhaps you should try some spelling variations:
"coder coding an semidefinite programming" » "coder coding and semidefinite programming" (Expand search), "coder coding in semidefinite programming" (Expand search), "coder coding on semidefinite programming" (Expand search), "modern coding an semidefinite programming" (Expand search), "color coding an semidefinite programming" (Expand search), "odor coding an semidefinite programming" (Expand search), "coder coding at semidefinite programming" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ python python python programming" (Expand search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coding an semidefinite programming") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding an semidefinite programming\") OR (\"in python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coding an semidefinite programming ) OR ( in python python python programming ))*.