Perhaps you should try some spelling variations:
"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)
"coder coding coding cost function" » "coder coding decoding cost function" (Expand search), "coder coding using cost function" (Expand search), "coder coding canine cost function" (Expand search), "modern coding coding cost function" (Expand search), "color coding coding cost function" (Expand search), "odor coding coding cost function" (Expand search), "coder coding holding cost function" (Expand search), "coder coding costing cost function" (Expand search), "coder coding coding co function" (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 coding coding cost function") OR ("spi in python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding coding cost function\") OR (\"spi in python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding coding cost function ) OR ( spi in python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding coding cost function") OR ("spi in python python programming"))*.