Perhaps you should try some spelling variations:
byquality control » _quality control, forquality control, quality controls
2c reliability » 2 reliability, 24 reliability, 29 reliability
20 reliability » 2 reliability, 10 reliability, 24 reliability
ic reliability » 5 reliability, 2 reliability, 7 reliability
4 safety » 5 safety
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: %((byquality control) OR (quality control))%((((2c reliability) OR (20 reliability))) OR (ic reliability))%((4 safety) OR (a safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((byquality control) or (quality control))%((((2c reliability) OR (20 reliability))) or (ic reliability))%((4 safety) or (a safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((byquality control) or (quality control))%((((2c reliability) OR (20 reliability))) or (ic reliability))%((4 safety) or (a safety)) and risk%22*.