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 detecting cu2 coding program" » "model detecting cu2 coding program" (Expand search), "code detection cu2 coding program" (Expand search), "hole detecting cu2 coding program" (Expand search), "coder detecting cu2 cloning program" (Expand search), "coder detecting cu2 loading program" (Expand search), "coder detecting cu2 cooling programs" (Expand search), "coder detecting acute coding program" (Expand search), "coder detecting code coding program" (Expand search), "coder detecting drug coding program" (Expand search), "coder detecting 2 coding program" (Expand search), "coder detecting cloud coding program" (Expand search), "coder detecting mecp2 coding program" (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 detecting cu2 coding program\") OR (\"variance optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( coder detecting cu2 coding program ) OR ( variance optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder detecting cu2 coding program") OR ("variance optimization python python programming"))*.