Perhaps you should try some spelling variations:
forquality control » quality control, byquality control, qouality control
_quality control » quality control, byquality control, quality controls
20 reliability » 2 reliability, 10 reliability, 29 reliability
21 reliability » 2 reliability, 1 reliability, 11 reliability
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
9 reliability » 3 reliability, 5 reliability, 2 reliability
2c safety » 22 safety, 23 safety, 25 safety
2 safety » 5 safety, 4 safety, 3 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: %((_quality control) OR (forquality control))%((((((20 reliability) OR (21 reliability))) OR (24 reliability))) OR (9 reliability))%((2c safety) OR (2 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_quality control) or (forquality control))%((((((20 reliability) or (21 reliability))) or (24 reliability))) or (9 reliability))%((2c safety) OR (2 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) or (forquality control))%((((((20 reliability) or (21 reliability))) or (24 reliability))) or (9 reliability))%((2c safety) OR (2 safety)) and risk%22*.