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 batch learning program" » "coder solution batch learning programme" (Expand search), "coder solution batch learning problems" (Expand search), "coder solution batch learning process" (Expand search), "code solution batch learning program" (Expand search), "powder solution batch learning program" (Expand search), "copper solution batch learning program" (Expand search), "coder solution cauchy learning program" (Expand search), "coder solution based learning program" (Expand search), "coder solution at learning program" (Expand search), "coder solution math learning program" (Expand search), "coder solution search learning program" (Expand search), "coder solution with learning 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 batch learning program\") OR (\"variance optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( coder solution batch learning program ) OR ( variance optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder solution batch learning program") OR ("variance optimization python python programming"))*.