Perhaps you should try some spelling variations:
"coder formulation and linear programing" » "powder formulation and linear programing" (Expand search), "model formulation and linear programing" (Expand search), "order formulation and linear programing" (Expand search), "coder formulation and linear programming" (Expand search), "coder formulation and linear programmin" (Expand search), "coder formulation and linear program" (Expand search), "coder formulation of linear programing" (Expand search), "coder formulation _ linear programing" (Expand search), "coder formulation and nonlinear programing" (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 formulation and linear programing\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( coder formulation and linear programing ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder formulation and linear programing") OR ("using coding python python programming"))*.