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