Perhaps you should try some spelling variations:
"coding relation using linear programming" » "loving relation using linear programming" (Expand search), "reading relation using linear programming" (Expand search), "loving relations using linear programming" (Expand search), "coding relations using linear programming" (Expand search), "coding regulation using linear programming" (Expand search), "coding relocation 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: (("coding relation using linear programming") OR ("using using python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coding relation using linear programming\") OR (\"using using python python programming\"))*".
• Removing quotes may allow a broader search: (( coding relation using linear programming ) OR ( using using python python programming ))*.