Perhaps you should try some spelling variations:
"code and encoding decoding functions" » "code and encoding deciding functions" (Expand search), "code and encoding coding functions" (Expand search), "code and encoding scoring functions" (Expand search), "code and reading decoding functions" (Expand search), "code and coding decoding functions" (Expand search), "code and decoding decoding functions" (Expand search), "code dna encoding decoding functions" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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: (("code and encoding decoding functions") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code and encoding decoding functions\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( code and encoding decoding functions ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("code and encoding decoding functions") OR ("_ python python python programming"))*.