Perhaps you should try some spelling variations:
"coder coder convex optimization program" » "coder coder convex optimization problem" (Expand search), "coder coder convex optimization programming" (Expand search), "coder coder convex optimization problems" (Expand search), "coder closed convex optimization program" (Expand search), "coder or convex optimization program" (Expand search), "coder some convex optimization program" (Expand search), "coder decoder convex optimization program" (Expand search), "code code convex optimization program" (Expand search), "decoder codec convex optimization program" (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), "rpa python 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 convex optimization program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder convex optimization program\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder convex optimization program ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder convex optimization program") OR ("api python python python programming"))*.