Perhaps you should try some spelling variations:
"and python python python programming" » "and pythons python python programming" (Expand search), "and piton python python programming" (Expand search), "and pitons python python programming" (Expand search), "in python python python programming" (Expand search), "on python python python programming" (Expand search), "api python python python programming" (Expand search)
"coder coder sample _ problems" » "coder modern sample _ problems" (Expand search), "coder cover samples _ problems" (Expand search), "coder code samples _ problems" (Expand search), "coder decoder sample _ problems" (Expand search), "code code sample _ problems" (Expand search), "decoder codec sample _ problems" (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 sample _ problems") OR ("and python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sample _ problems\") OR (\"and python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder sample _ problems ) OR ( and python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder sample _ problems") OR ("and python python python programming"))*.