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