Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
2c reliability » 2 reliability, ic reliability, 20 reliability
21 safety » 11 safety, 1 safety, 23 safety
22 safety » 12 safety, a safety, 5 safety
2 safety » a safety, 5 safety, 4 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%((((2 safety) OR (21 safety))) OR (22 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %22quality control%2c reliability%((((2 safety) or (21 safety))) or (22 safety)) and risk%22*.