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