Perhaps you should try some spelling variations:
2c reliability » 24 reliability, 20 reliability, 21 reliability
ic reliability » 9 reliability, 8 reliability, 11 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
5 safety » _ safety, a 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))) OR (2 reliability))))%5 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%quality control%((2c reliability) or (((((ic reliability) OR (5 reliability))) or (2 reliability))))%5 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %quality control%((2c reliability) or (((((ic reliability) OR (5 reliability))) or (2 reliability))))%5 safety and risk%22*.