Perhaps you should try some spelling variations:
"coder coder vector space problem" » "coder coder vector state problem" (Expand search), "coder coder vector same problem" (Expand search), "coder coder vector scale problem" (Expand search), "coder under vector space problem" (Expand search), "coder model vector space problem" (Expand search), "coder order vector space problem" (Expand search), "coder decoder vector space problem" (Expand search), "code code vector space problem" (Expand search), "decoder codec vector space 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)

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 vector space problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder vector space problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder vector space problem ) OR ( api python python python programming ))*.