Perhaps you should try some spelling variations:
2c reliability » 20 reliability, 24 reliability, 29 reliability
ic reliability » 3 reliability, 7 reliability, 8 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
a safety » a safe

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) OR (a 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) OR (a 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) OR (a safety)) and risk%22*.