Perhaps you should try some spelling variations:
"interface coding using linear programming" » "interface coping using linear programming" (Expand search), "interface bonding using linear programming" (Expand search), "interface coupling using linear programming" (Expand search), "interface loading using linear programming" (Expand search), "interface modeling using linear programming" (Expand search), "interface drying using linear programming" (Expand search)
"using using python python programming" » "using using pythons python programming" (Expand search), "using using piton python programming" (Expand search), "using using pitons python programming" (Expand search), "using usando python python programming" (Expand search), "using in python python programming" (Expand search), "using fusing python python programming" (Expand search), "housing using python python programming" (Expand search), "nursing using 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: (("interface coding using linear programming") OR ("using using python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"interface coding using linear programming\") OR (\"using using python python programming\"))".
• Removing quotes may allow a broader search: (( interface coding using linear programming ) OR ( using using python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("interface coding using linear programming") OR ("using using python python programming"))*.