Perhaps you should try some spelling variations:
parallel tutorial » parallel bacterial, parallel serial
function function » function functional, functions functional, function dysfunction
function https » functions https, fiction https
tutorial abl » tutorials abc, tutorial a, tutorial ql
abl function » l function, rsl function, nasal function

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

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