Perhaps you should try some spelling variations:
"coder coder rating some problems" » "coder coder rating the problems" (Expand search), "coder vocoder rating some problems" (Expand search), "coder power rating some problems" (Expand search), "coder code drafting some problems" (Expand search), "coder decoder rating some problems" (Expand search), "code code rating some problems" (Expand search), "decoder codec rating some problems" (Expand search), "coder coder reading some problems" (Expand search), "coder coder writing some problems" (Expand search), "coder coder rating smr problems" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 rating some problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder rating some problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder rating some problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder rating some problems") OR ("on python python python programming"))*.