Perhaps you should try some spelling variations:
"making formulation and coding problems" » "mixing formulations and coding problems" (Expand search), "coating formulations and coding problems" (Expand search), "making information and coding problems" (Expand search), "making formulation of coding problems" (Expand search), "making formulation _ coding problems" (Expand search), "making formulation and loading problems" (Expand search), "making formulation and counting problems" (Expand search), "making formulation and covering problems" (Expand search), "making formulation and coping problems" (Expand search), "making formulation and cooling problems" (Expand search), "making formulation and cooking 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: "((\"making formulation and coding problems\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( making formulation and coding problems ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("making formulation and coding problems") OR ("using coding python python programming"))*.