Perhaps you should try some spelling variations:
"coder functions in teaching programming" » "coder functions in teaching program" (Expand search), "power functions in teaching programming" (Expand search), "order functions in teaching programming" (Expand search), "colour functions in teaching programming" (Expand search)
"an introduction python python programming" » "an introduction section python programming" (Expand search), "an introduction earthen python programming" (Expand search), "an introduction methods python programming" (Expand search), "an introduction pythons python programming" (Expand search), "an introduction piton python programming" (Expand search), "an introduction pitons 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: (("coder functions in teaching programming") OR ("an introduction python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder functions in teaching programming\") OR (\"an introduction python python programming\"))*".
• Removing quotes may allow a broader search: (( coder functions in teaching programming ) OR ( an introduction python python programming ))*.