Perhaps you should try some spelling variations:
22quality control » _quality control, byquality control, forquality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
2 reliability » 3 reliability, 5 reliability
9 reliability » 3 reliability, 5 reliability, 4 reliability
2c safety » 2 safety, 22 safety, 25 safety
23 safety » 3 safety, 2 safety, 13 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 (quality control))%((((2c reliability) OR (2 reliability))) OR (9 reliability))%((2c safety) OR (23 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) OR (quality control))%((((2c reliability) or (2 reliability))) or (9 reliability))%((2c safety) or (23 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) OR (quality control))%((((2c reliability) or (2 reliability))) or (9 reliability))%((2c safety) or (23 safety)) and risk%22*.