Perhaps you should try some spelling variations:
"coder coder data chess problem" » "coder coder data class problem" (Expand search), "coder coder data access problems" (Expand search), "coder coder data class problems" (Expand search), "coder decoder data chess problem" (Expand search), "code code data chess problem" (Expand search), "decoder codec data chess problem" (Expand search), "coder cover data chess problem" (Expand search), "coder code data chess problem" (Expand search), "coder border data chess problem" (Expand search), "coder coder data access problem" (Expand search), "coder coder data cross problem" (Expand search), "coder coder data chinese problem" (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 data chess problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder data chess problem\") OR (\"on python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder data chess problem ) OR ( on python python python programming ))*.