Perhaps you should try some spelling variations:
"coder coder modes convex programming" » "coder coder modes cone programming" (Expand search), "coder coder modes computer programming" (Expand search), "coder coder some convex programming" (Expand search), "coder decoder modes convex programming" (Expand search), "code code modes convex programming" (Expand search), "decoder codec modes convex programming" (Expand search), "coder order modes convex programming" (Expand search), "coder decoder models convex programming" (Expand search), "coder decoder model convex programming" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python 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 modes convex programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder modes convex programming\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder modes convex programming ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder modes convex programming") OR ("_ python python python programming"))*.