Perhaps you should try some spelling variations:
"variance optimization python python programming" » "surface optimization python python programming" (Expand search), "engine optimization python python programming" (Expand search), "value optimization python python programming" (Expand search), "variance optimization method python programming" (Expand search), "variance optimization option python programming" (Expand search), "variance optimization methods python programming" (Expand search), "variance optimization pythons python programming" (Expand search), "variance optimization piton python programming" (Expand search), "variance optimization pitons python programming" (Expand search)
"coder detection with blocking program" » "coder detection with stocking program" (Expand search), "coder detection with smoking program" (Expand search), "coder detection with cloning program" (Expand search), "code detection with blocking program" (Expand search), "border detection with blocking program" (Expand search), "corner detection with blocking program" (Expand search), "coder infection with blocking program" (Expand search), "coder detection with working program" (Expand search), "coder detection with bleeding 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 detection with blocking program") OR ("variance optimization python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder detection with blocking program\") OR (\"variance optimization python python programming\"))*".
• Removing quotes may allow a broader search: (( coder detection with blocking program ) OR ( variance optimization python python programming ))*.