Perhaps you should try some spelling variations:
functionality testing » functionality setting, functional testing, functionality using
plm functionality » plc functionality, cell functionality, _ functionality
interface python » interface method, interface proton, interface methods
testing https » teaching https, being https, writing https
python plm » python plug, pythons plus

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

• Performing a fuzzy search may retrieve terms with similar spellings: interface python plm functionality testing https~.
• Adding a wildcard symbol may retrieve word variants: interface python plm functionality testing https*.