Perhaps you should try some spelling variations:
"coder coder creation based problems" » "coder code creation based problems" (Expand search), "coder model creation based problems" (Expand search), "coder center creation based problems" (Expand search), "coder coder recreation based problems" (Expand search), "coder coder creative based problems" (Expand search), "coder coder correlation based problems" (Expand search), "coder coder creation posed problems" (Expand search), "coder coder creation basic problems" (Expand search), "coder coder creation based probes" (Expand search), "coder decoder creation based problems" (Expand search), "code code creation based problems" (Expand search), "decoder codec creation based 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 creation based problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder creation based problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder creation based problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder creation based problems") OR ("on python python python programming"))*.