Perhaps you should try some spelling variations:
"codes and complexity classes problem" » "codes and complexity channel problem" (Expand search), "codes and complexity based problem" (Expand search), "codes and complexity cases problem" (Expand search), "codes and complexity class problem" (Expand search), "codes and complexity classic problem" (Expand search), "code and complexity classes problem" (Expand search), "modes and complexity classes 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: (("codes and complexity classes problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"codes and complexity classes problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( codes and complexity classes problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("codes and complexity classes problem") OR ("api python python python programming"))*.