Perhaps you should try some spelling variations:
2c reliability » 2 reliability, 24 reliability, 20 reliability
ic reliability » 2 reliability, 9 reliability, 8 reliability
5 reliability » 3 reliability, 2 reliability
22 safety » 2 safety, _ safety, a safety
12 safety » 2 safety, 10 safety, 11 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: %quality control%((2c reliability) OR (((ic reliability) OR (5 reliability))))%((22 safety) OR (12 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %quality control%((2c reliability) or (((ic reliability) or (5 reliability))))%((22 safety) or (12 safety)) and risk%22*.