Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
20 reliability » 2 reliability, 10 reliability, 29 reliability
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
ic reliability » 5 reliability, 2 reliability, 7 reliability
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: %22quality control%((((20 reliability) OR (24 reliability))) OR (ic reliability))%((a safety) OR (_ safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((((20 reliability) OR (24 reliability))) or (ic reliability))%((a safety) or (_ safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((20 reliability) OR (24 reliability))) or (ic reliability))%((a safety) or (_ safety)) and risk%22*.