Perhaps you should try some spelling variations:
"coder coder pulse sequence problem" » "coder coder pulse sequences problems" (Expand search), "coder coder pulse subsequence problem" (Expand search), "coder coder pulse sequencing problem" (Expand search), "coder coder pulse sequences problem" (Expand search), "coder coder pulse frequency problem" (Expand search), "coder coder base sequence problem" (Expand search), "coder decoder pulse sequence problem" (Expand search), "code code pulse sequence problem" (Expand search), "decoder codec pulse sequence problem" (Expand search), "coder under pulse sequence problem" (Expand search), "coder counter pulse sequence 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 pulse sequence problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder pulse sequence problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder pulse sequence problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder pulse sequence problem") OR ("api python python python programming"))*.