Perhaps you should try some spelling variations:
"using routine in linear programming" » "during routine in linear programming" (Expand search), "using rotating in linear programming" (Expand search), "in routine in linear programming" (Expand search), "using routine and linear programming" (Expand search), "using routine of linear programming" (Expand search), "using routine non linear programming" (Expand search), "using routine in line programming" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("using routine in linear programming") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using routine in linear programming\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( using routine in linear programming ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using routine in linear programming") OR ("using coding python python programming"))*.