Perhaps you should try some spelling variations:
"coder solution using optimization problems" » "coder solution time optimization problems" (Expand search), "code solution using optimization problems" (Expand search), "copper solution using optimization problems" (Expand search), "powder solution using optimization problems" (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: "((\"coder solution using optimization problems\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( coder solution using optimization problems ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder solution using optimization problems") OR ("using coding python python programming"))*.