Perhaps you should try some spelling variations:
"coder decoder creating sample problem" » "coder debate creating sample problem" (Expand search), "coder decoder treating simple problem" (Expand search), "coder decoder setting sample problem" (Expand search), "coder decoder creating supply problem" (Expand search), "coder decoder creating complex problem" (Expand search), "coder decoder creating scale problem" (Expand search), "encoder decoder creating sample 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 decoder creating sample problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder creating sample problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder creating sample problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder creating sample problem") OR ("on python python python programming"))*.