Perhaps you should try some spelling variations:
"coder coder stack matlab programming" » "coder coder stack math programming" (Expand search), "coder coder stack matlab programa" (Expand search), "coder coder stack data programming" (Expand search), "coder decoder stack matlab programming" (Expand search), "code code stack matlab programming" (Expand search), "decoder codec stack matlab programming" (Expand search), "coder roger stacke matlab programming" (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 stack matlab programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder stack matlab programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder stack matlab programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder stack matlab programming") OR ("on python python python programming"))*.