Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 2 reliability, 24 reliability, 20 reliability
ic reliability » 2 reliability, 5 reliability, 9 reliability
2 safety » 3 safety
a safety » a safe

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 (((5 safety) OR (((a safety) OR (_ safety))))))) OR (4 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 (((5 safety) or (((a safety) OR (_ safety))))))) or (4 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((2c reliability) or (ic reliability))%((((2 safety) or (((5 safety) or (((a safety) OR (_ safety))))))) or (4 safety)) and risk%22*.