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