Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
byquality control » quality control, _quality control, forquality control
2c reliability » 24 reliability, ic reliability, 21 reliability
20 reliability » 10 reliability, 24 reliability, 29 reliability
2 reliability » 3 reliability, 5 reliability
9 reliability » 3 reliability, 5 reliability, 4 reliability
22 safety » 2 safety, 12 safety, _ safety
a safety » _ safety
safety » samety
safe » same

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))%((((((2c reliability) OR (20 reliability))) OR (2 reliability))) OR (9 reliability))%((22 safety) OR (((2((a safety) OR (a safe))) OR (((a safety) OR (a safe)))))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (byquality control))%((((((2c reliability) OR (20 reliability))) or (2 reliability))) or (9 reliability))%((22 safety) or (((2((a safety) or (a safe))) or (((a safety) or (a safe)))))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (byquality control))%((((((2c reliability) OR (20 reliability))) or (2 reliability))) or (9 reliability))%((22 safety) or (((2((a safety) or (a safe))) or (((a safety) or (a safe)))))) and risk%22*.