Perhaps you should try some spelling variations:
"coder coder sampling _ programming" » "coder under sampling _ programming" (Expand search), "coder over sampling _ programming" (Expand search), "coder core sampling _ programming" (Expand search), "coder decoder sampling _ programming" (Expand search), "code code sampling _ programming" (Expand search), "decoder codec sampling _ programming" (Expand search)
"in python pythin python programming" » "in python python python programming" (Expand search), "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in python pythons python programming" (Expand search), "in python piton 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 sampling _ programming") OR ("in python pythin python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sampling _ programming\") OR (\"in python pythin python programming\"))".
• Removing quotes may allow a broader search: (( coder coder sampling _ programming ) OR ( in python pythin python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder sampling _ programming") OR ("in python pythin python programming"))*.