Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 2 reliability, 24 reliability, 29 reliability
20 reliability » 2 reliability, 10 reliability, 24 reliability
21 reliability » 2 reliability, 1 reliability, 11 reliability
ic reliability » 5 reliability, 2 reliability, 7 reliability
2c safety » 2 safety, 23 safety, 25 safety
22 safety » 2 safety, 5 safety, 4 safety
12 safety » 2 safety, 10 safety, 11 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 (20 reliability))) OR (21 reliability))) OR (ic reliability))%((2c safety) OR (((22 safety) OR (12 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 (21 reliability))) or (ic reliability))%((2c safety) or (((22 safety) or (12 safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((((2c reliability) OR (20 reliability))) or (21 reliability))) or (ic reliability))%((2c safety) or (((22 safety) or (12 safety)))) and risk%22*.