Perhaps you should try some spelling variations:
"variance optimization of computer program" » "surface optimization of computer program" (Expand search), "engine optimization of computer program" (Expand search), "value optimization of computer program" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python python programming" (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: "((\"variance optimization of computer program\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( variance optimization of computer program ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("variance optimization of computer program") OR ("using coding python python programming"))*.