Perhaps you should try some spelling variations:
byquality control » quality control, forquality control, quality controls
_quality control » quality control, quality controls, qouality control
2c reliability » 20 reliability, 29 reliability, ic reliability
24 reliability » 2.4 reliability, 4 reliability, 14 reliability
2 reliability » 3 reliability, 5 reliability
23 safety » 3 safety, 2 safety, 13 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) OR (byquality control))%((((2c reliability) OR (24 reliability))) OR (2 reliability))%((23 safety) OR (_ safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_quality control) OR (byquality control))%((((2c reliability) or (24 reliability))) or (2 reliability))%((23 safety) or (_ safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) OR (byquality control))%((((2c reliability) or (24 reliability))) or (2 reliability))%((23 safety) or (_ safety)) and risk%22*.