Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
20 reliability » 10 reliability, 24 reliability, 29 reliability
ic reliability » 5 reliability, 8 reliability, 11 reliability
2 reliability » 3 reliability, 5 reliability
9 reliability » 3 reliability, 5 reliability, 4 reliability
2 safety » _ safety, a safety, 4 safety
5 safety » _ safety, a 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%((((20 reliability) OR (2 reliability))) OR (((ic reliability) OR (9 reliability))))%((2 safety) OR (5 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((((20 reliability) OR (2 reliability))) or (((ic reliability) or (9 reliability))))%((2 safety) or (5 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((20 reliability) OR (2 reliability))) or (((ic reliability) or (9 reliability))))%((2 safety) or (5 safety)) and risk%22*.