Perhaps you should try some spelling variations:
"coder decoder python c programming" » "encoder decoder python c programming" (Expand search), "coder decoder python _ programming" (Expand search), "coder decoder python cone programming" (Expand search), "coder decoder python and programming" (Expand search)
"spi in python python programming" » "spi in pythons python programming" (Expand search), "spi in piton python programming" (Expand search), "spi in pitons python programming" (Expand search), "spi _ 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: (("coder decoder python c programming") OR ("spi in python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder python c programming\") OR (\"spi in python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder python c programming ) OR ( spi in python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder python c programming") OR ("spi in python python programming"))*.