Perhaps you should try some spelling variations:
"coder coder course learning problem" » "coder coder course learning problems" (Expand search), "coder coder course planning problem" (Expand search), "coder coder course learning program" (Expand search), "coder lower course learning problem" (Expand search), "coder borders course learning problem" (Expand search), "coder milder course learning problem" (Expand search), "coder decoder course learning problem" (Expand search), "code code course learning problem" (Expand search), "decoder codec course learning 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 course learning problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder course learning problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder course learning problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder course learning problem") OR ("on python python python programming"))*.