Perhaps you should try some spelling variations:
22quality control » _quality control, forquality control, quality controls
byquality control » _quality control, forquality control, quality controls
2c reliability » 20 reliability, 24 reliability, 29 reliability
ic reliability » 3 reliability, 7 reliability, 8 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
2c safety » 2 safety, 23 safety, 25 safety
22 safety » 2 safety, 12 safety, 5 safety

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