Perhaps you should try some spelling variations:
"coder coding coding formal specification" » "coder coding coding formal verification" (Expand search), "coder coding decoding formal specification" (Expand search), "coder coding using formal specification" (Expand search), "coder coding canine formal specification" (Expand search), "coder coding coding format specification" (Expand search), "coder coding mining formal specification" (Expand search), "modern coding coding formal specification" (Expand search), "color coding coding formal specification" (Expand search), "odor coding coding formal specification" (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 coding coding formal specification") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding coding formal specification\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coding coding formal specification ) OR ( api python python python programming ))*.