Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
ic reliability » 3 reliability, 2 reliability, 7 reliability
5 reliability » 3 reliability
2c safety » 2 safety, 23 safety, 21 safety
22 safety » 2 safety, 12 safety, 4 safety
25 safety » 2 safety, 15 safety, 23 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%((ic reliability) OR (5 reliability))%((((((2c safety) OR (22 safety))) OR (5 safety))) OR (25 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((ic reliability) or (5 reliability))%((((((2c safety) OR (22 safety))) or (5 safety))) or (25 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((ic reliability) or (5 reliability))%((((((2c safety) OR (22 safety))) or (5 safety))) or (25 safety)) and risk%22*.