Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 24 reliability, 21 reliability, 22 reliability
20 reliability » 10 reliability, 24 reliability, 29 reliability
ic reliability » 5 reliability, 7 reliability, 8 reliability
2 reliability » 5 reliability
3 reliability » 5 reliability
2 safety » 4 safety, 3 safety

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 (20 reliability))) OR (((2 reliability) OR (3 reliability))))) OR (ic reliability))%((2 safety) OR (5 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((((((2c reliability) or (20 reliability))) or (((2 reliability) OR (3 reliability))))) or (ic reliability))%((2 safety) or (5 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((((2c reliability) or (20 reliability))) or (((2 reliability) OR (3 reliability))))) or (ic reliability))%((2 safety) or (5 safety)) and risk%22*.