Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
24 reliability » 2.4 reliability, 4 reliability, 14 reliability
11 reliability » 1 reliability, 3 reliability, 5 reliability
ic reliability » 5 reliability, 7 reliability, 8 reliability
2 reliability » 3 reliability, 5 reliability
22 safety » 5 safety, 4 safety, 3 safety
12 safety » 10 safety, 11 safety, 1 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%((((24 reliability) OR (11 reliability))) OR (((ic reliability) OR (2 reliability))))%((2 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%((((24 reliability) or (11 reliability))) or (((ic reliability) or (2 reliability))))%((2 safety) or (((22 safety) OR (12 safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((24 reliability) or (11 reliability))) or (((ic reliability) or (2 reliability))))%((2 safety) or (((22 safety) OR (12 safety)))) and risk%22*.