Perhaps you should try some spelling variations:
byquality control » _quality control, forquality control, quality controls
ic reliability » 5 reliability, 2 reliability, 7 reliability
1 reliability » 3 reliability, 5 reliability, 2 reliability
22 safety » 12 safety, 5 safety, 4 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) OR (byquality control))%((1 reliability) OR (ic reliability))%((22 safety) OR (2 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((quality control) or (byquality control))%((1 reliability) or (ic reliability))%((22 safety) OR (2 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((quality control) or (byquality control))%((1 reliability) or (ic reliability))%((22 safety) OR (2 safety)) and risk%22*.