Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 2 reliability, 24 reliability, ic reliability
9 reliability » 3 reliability, 2 reliability, 5 reliability
2 safety » _ 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%((2c reliability) OR (9 reliability))%2 safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %22quality control%((2c reliability) or (9 reliability))%2 safety and risk%22*.