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