Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, quality controls
24 reliability » 2.4 reliability, 4 reliability, 14 reliability
21 reliability » 1 reliability, 11 reliability, 20 reliability
ic reliability » 7 reliability, 8 reliability, 11 reliability
2 reliability » 3 reliability
5 reliability » 3 reliability
23 safety » 3 safety, 13 safety, 22 safety
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%((((((24 reliability) OR (((2 reliability) OR (5 reliability))))) OR (21 reliability))) OR (ic reliability))%((23 safety) OR (2 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%_quality control%((((((24 reliability) or (((2 reliability) or (5 reliability))))) or (21 reliability))) or (ic reliability))%((23 safety) OR (2 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %_quality control%((((((24 reliability) or (((2 reliability) or (5 reliability))))) or (21 reliability))) or (ic reliability))%((23 safety) OR (2 safety)) and risk%22*.