Perhaps you should try some spelling variations:
"encoding decoding python code programming" » "reading decoding python code programming" (Expand search), "encoding decoding python cone programming" (Expand search), "encoding decoding python core programming" (Expand search), "encoding decoding python co programming" (Expand search), "encoding decoding method code programming" (Expand search)
"vpython using python python programming" » "vpython using pythons python programming" (Expand search), "vpython using piton python programming" (Expand search), "vpython using pitons python programming" (Expand search), "vpython usando python python programming" (Expand search), "vpython in 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: (("encoding decoding python code programming") OR ("vpython using python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"encoding decoding python code programming\") OR (\"vpython using python python programming\"))".
• Removing quotes may allow a broader search: (( encoding decoding python code programming ) OR ( vpython using python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("encoding decoding python code programming") OR ("vpython using python python programming"))*.