Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
ic reliability » 5 reliability, 9 reliability, 8 reliability
2 reliability » 5 reliability
12 safety » 10 safety, 11 safety, 1 safety
2 safety » _ safety, a safety, 5 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%((2 reliability) OR (((ic reliability) OR (3 reliability))))%((2 safety) OR (12 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %22quality control%((2 reliability) or (((ic reliability) or (3 reliability))))%((2 safety) or (12 safety)) and risk%22*.