Perhaps you should try some spelling variations:
"and introduction python python programming" » "and introduction section python programming" (Expand search), "and introduction earthen python programming" (Expand search), "and introduction methods python programming" (Expand search), "an introduction python python programming" (Expand search), "and introduction pythons python programming" (Expand search), "and introduction piton python programming" (Expand search), "and introduction pitons python programming" (Expand search)
"coder function in linear programming" » "modern function in linear programming" (Expand search), "power function in linear programming" (Expand search), "over function in linear programming" (Expand search), "coder function non linear programming" (Expand search), "coder function in line 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: (("coder function in linear programming") OR ("and introduction python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder function in linear programming\") OR (\"and introduction python python programming\"))".
• Removing quotes may allow a broader search: (( coder function in linear programming ) OR ( and introduction python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder function in linear programming") OR ("and introduction python python programming"))*.