Perhaps you should try some spelling variations:
"coder coder strings c programming" » "coder model strings c programming" (Expand search), "coder encoded strings c programming" (Expand search), "coder closed strings c programming" (Expand search), "coder coder strings _ programming" (Expand search), "coder coder strings cone programming" (Expand search), "coder coder strings and programming" (Expand search), "coder decoder strings c programming" (Expand search), "code code strings c programming" (Expand search), "decoder codec strings c programming" (Expand search), "coder coder string c programming" (Expand search), "coder coder strings m 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 strings c programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder strings c programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder strings c programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder strings c programming") OR ("on python python python programming"))*.