Perhaps you should try some spelling variations:
"coder coder cost optimization problems" » "coder coder robust optimization problems" (Expand search), "coder coder time optimization problems" (Expand search), "coder decoder cost optimization problems" (Expand search), "code code cost optimization problems" (Expand search), "decoder codec cost optimization problems" (Expand search), "coder cover cost optimization problems" (Expand search), "coder modern cost optimization problems" (Expand search), "coder lower cost optimization problems" (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), "manim 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 cost optimization problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder cost optimization problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder cost optimization problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder cost optimization problems") OR ("api python python python programming"))*.