Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
ic reliability » 5 reliability, 7 reliability, 8 reliability
2 reliability » 3 reliability, 5 reliability
2c safety » 21 safety, 24 safety, 28 safety
25 safety » 15 safety, 4 safety, 3 safety
22 safety » 12 safety, 4 safety, 3 safety
23 safety » 3 safety, 13 safety, 4 safety
2 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%((((2c reliability) OR (2 reliability))) OR (ic reliability))%((((((2c safety) OR (25 safety))) OR (((22 safety) OR (5 safety))))) OR (((((23 safety) OR (_ safety))) OR (2 safety)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((((2c reliability) or (2 reliability))) or (ic reliability))%((((((2c safety) or (25 safety))) or (((22 safety) OR (5 safety))))) or (((((23 safety) or (_ safety))) or (2 safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((2c reliability) or (2 reliability))) or (ic reliability))%((((((2c safety) or (25 safety))) or (((22 safety) OR (5 safety))))) or (((((23 safety) or (_ safety))) or (2 safety)))) and risk%22*.