Perhaps you should try some spelling variations:
"closed string _ algorithm and" » "closed strings _ algorithm and" (Expand search), "closest string _ algorithm and" (Expand search), "closed springs _ algorithm and" (Expand search), "closed string _ algorithms and" (Expand search), "closed string _ algorithm based" (Expand search), "closed string _ algorithm _" (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: (("closed string _ algorithm and") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"closed string _ algorithm and\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( closed string _ algorithm and ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("closed string _ algorithm and") OR ("api python python python programming"))*.