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