Perhaps you should try some spelling variations:
"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)
"based functions re coding program" » "base functions re coding program" (Expand search), "based function re coding program" (Expand search), "based functional re coding program" (Expand search), "based functions re cloning program" (Expand search), "based functions re loading program" (Expand search), "based functions re cooling programs" (Expand search), "based functions are coding program" (Expand search), "based functions _ coding program" (Expand search), "based functions by coding program" (Expand search), "based functions rate coding program" (Expand search), "based functions rare coding program" (Expand search), "based functions the coding program" (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: (("based functions re coding program") OR ("an introduction python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based functions re coding program\") OR (\"an introduction python python programming\"))".
• Removing quotes may allow a broader search: (( based functions re coding program ) OR ( an introduction python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("based functions re coding program") OR ("an introduction python python programming"))*.