Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
2c reliability » 2 reliability, ic reliability, 20 reliability
21 reliability » 2 reliability, 1 reliability, 11 reliability
2c safety » 2 safety, 22 safety, 23 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 (21 reliability))%2c safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((2c reliability) OR (21 reliability))%2c safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((2c reliability) OR (21 reliability))%2c safety and risk%22*.