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