Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
byquality control » quality control, _quality control, forquality control
20 reliability » 2 reliability, 10 reliability, 24 reliability
ic reliability » 5 reliability, 2 reliability, 7 reliability
2 safety » 4 safety, 3 safety
a safety » a safe

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: %((22quality control) OR (byquality control))%((20 reliability) OR (ic reliability))%((2 safety) OR (((5 safety) OR (a safety)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (byquality control))%((20 reliability) or (ic reliability))%((2 safety) or (((5 safety) OR (a safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (byquality control))%((20 reliability) or (ic reliability))%((2 safety) or (((5 safety) OR (a safety)))) and risk%22*.