Perhaps you should try some spelling variations:
forquality control » quality control, _quality control, byquality control
22quality control » quality control, _quality control, byquality control
2c reliability » 24 reliability, ic reliability, 20 reliability
2 reliability » 3 reliability, 5 reliability
4 safety » a safety, 5 safety

Try widening your search to All Fields.

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: %((22quality control) OR (forquality control))%((2c reliability) OR (2 reliability))%((4 safety) OR (_ safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (forquality control))%((2c reliability) or (2 reliability))%((4 safety) or (_ safety)) and risk%22*.