Perhaps you should try some spelling variations:
"coder coder in smooth problem" » "coder coder in smooth problems" (Expand search), "coder coder in smith problem" (Expand search), "coder coder in math problem" (Expand search), "coder decoder in smooth problem" (Expand search), "code code in smooth problem" (Expand search), "decoder codec in smooth problem" (Expand search), "coder coder non smooth problem" (Expand search), "coder coder and smooth problem" (Expand search), "coder coder _ smooth problem" (Expand search), "coder code in smooth problem" (Expand search), "coder codes in smooth problem" (Expand search), "coder poder in smooth problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python 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 in smooth problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder in smooth problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder in smooth problem ) OR ( api python python python programming ))*.