Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, quality controls
2c reliability » 20 reliability, 24 reliability, 29 reliability
21 reliability » 1 reliability, 20 reliability, 24 reliability
ic reliability » 7 reliability, 8 reliability, 13 reliability
11 reliability » 1 reliability, 3 reliability, 7 reliability
2 reliability » 3 reliability
5 reliability » 3 reliability
9 reliability » 3 reliability, 4 reliability
2 safety » 5 safety, 4 safety, 3 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 (((21 reliability) OR (2 reliability))))) OR (((((((ic reliability) OR (5 reliability))) OR (11 reliability))) OR (9 reliability))))%2 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%_quality control%((((2c reliability) or (((21 reliability) or (2 reliability))))) or (((((((ic reliability) OR (5 reliability))) or (11 reliability))) or (9 reliability))))%2 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %_quality control%((((2c reliability) or (((21 reliability) or (2 reliability))))) or (((((((ic reliability) OR (5 reliability))) or (11 reliability))) or (9 reliability))))%2 safety and risk%22*.