Perhaps you should try some spelling variations:
postgresql function » postgresql functions, postgresql functionality
function function » function functional, functions functional, function dysfunction
function https » functions https, fiction https
a postgresql » _ postgresql, data postgresql, many postgresql
parallel a » parallel _, parallel data

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: parallel a postgresql function function https~.
• Adding a wildcard symbol may retrieve word variants: parallel a postgresql function function https*.