Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
8 reliability » 3 reliability, 4 reliability, 7 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
25 safety » 2 safety, 15 safety, 22 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 (((8 reliability) OR (((5 reliability) OR (2 reliability))))))%((5 safety) OR (25 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %22quality control%((2c reliability) or (((8 reliability) or (((5 reliability) or (2 reliability))))))%((5 safety) or (25 safety)) and risk%22*.