Perhaps you should try some spelling variations:
22quality control » _quality control, byquality control, forquality control
20 reliability » 24 reliability, 29 reliability, 30 reliability
10 reliability » 5 reliability, 4 reliability
ic reliability » 5 reliability, 7 reliability, 8 reliability
2 reliability » 5 reliability
3 reliability » 5 reliability
2c safety » 22 safety, 23 safety, 25 safety
2 safety » 5 safety, 4 safety, 3 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))%((((((20 reliability) OR (2 reliability))) OR (((10 reliability) OR (3 reliability))))) OR (ic reliability))%((2c safety) OR (2 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (quality control))%((((((20 reliability) or (2 reliability))) or (((10 reliability) or (3 reliability))))) or (ic reliability))%((2c safety) OR (2 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (quality control))%((((((20 reliability) or (2 reliability))) or (((10 reliability) or (3 reliability))))) or (ic reliability))%((2c safety) OR (2 safety)) and risk%22*.