Perhaps you should try some spelling variations:
postgresql functionality » postgresql functions, paste functionality, potential functionality
functionality function » functionals function, functionaries function, functional functions
tree postgresql » rules postgresql
function https » functions https, fiction https
parallel tree » parallel code, parallel text

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

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