Perhaps you should try some spelling variations:
byquality control » quality control, _quality control, forquality control
3 reliability » 5 reliability
2 reliability » 5 reliability
22 safety » 2 safety, 12 safety, 5 safety
safety » samety
safe » same

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

• If you are trying to use Boolean operators, they must be ALL CAPS: %byquality control%((3 reliability) OR (2 reliability))%((22 safety) OR (((a safety) OR (a safe)))) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %byquality control%((3 reliability) or (2 reliability))%((22 safety) or (((a safety) or (a safe)))) and risk%22*.