Perhaps you should try some spelling variations:
"coder coder creating smooth problems" » "coder coder creating mooc problems" (Expand search), "coder coder creating math problems" (Expand search), "coder co creating smooth problems" (Expand search), "coder code creation smooth problems" (Expand search), "coder after creating smooth problems" (Expand search), "coder decoder creating smooth problems" (Expand search), "code code creating smooth problems" (Expand search), "decoder codec creating smooth 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 creating smooth problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder creating smooth problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder creating smooth problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder creating smooth problems") OR ("on python python python programming"))*.