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 solution in coping program" » "code solution in coping program" (Expand search), "powder solution in coping program" (Expand search), "copper solution in coping program" (Expand search), "coder solution in cloning program" (Expand search), "coder solution in computing program" (Expand search), "coder solution in cooling programs" (Expand search), "coder solutions in coping program" (Expand search), "coder solution and coping program" (Expand search), "coder solution _ coping 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 solution in coping program\") OR (\"variance optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( coder solution in coping program ) OR ( variance optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder solution in coping program") OR ("variance optimization python python programming"))*.