Perhaps you should try some spelling variations:
"coder coder decoding logarithm problem" » "coder coder decoding algorithm problem" (Expand search), "coder coder decoding algorithms problem" (Expand search), "coder coding decoding logarithm problem" (Expand search), "coder coder decoder logarithm problem" (Expand search), "coder barcode decoding logarithm problem" (Expand search), "coder decoder decoding logarithm problem" (Expand search), "code code decoding logarithm problem" (Expand search), "decoder codec decoding logarithm problem" (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: (("coder coder decoding logarithm problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder decoding logarithm problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder decoding logarithm problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder decoding logarithm problem") OR ("_ python python python programming"))*.