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