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