Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 2 reliability, 20 reliability, 24 reliability
ic reliability » 5 reliability, 2 reliability, 7 reliability
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 (ic reliability))%((((((2 safety) OR (_ safety))) OR (5 safety))) OR (2((((2 safety) OR (_ 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 (ic reliability))%((((((2 safety) OR (_ safety))) or (5 safety))) or (2((((2 safety) OR (_ safety))) or (5 safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((2c reliability) or (ic reliability))%((((((2 safety) OR (_ safety))) or (5 safety))) or (2((((2 safety) OR (_ safety))) or (5 safety)))) and risk%22*.