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