Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 24 reliability, ic reliability, 20 reliability
2 reliability » 5 reliability
9 reliability » 5 reliability, 4 reliability
2c safety » 2 safety, 22 safety, 25 safety
23 safety » 3 safety, 2 safety, 13 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 (2 reliability))) OR (((9 reliability) OR (3 reliability))))%((2c safety) OR (23 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((((2c reliability) or (2 reliability))) or (((9 reliability) OR (3 reliability))))%((2c safety) or (23 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((2c reliability) or (2 reliability))) or (((9 reliability) OR (3 reliability))))%((2c safety) or (23 safety)) and risk%22*.