Perhaps you should try some spelling variations:
_quality control » byquality control, quality controls, qouality control
2c reliability » 20 reliability, 29 reliability, ic reliability
21 reliability » 1 reliability, 11 reliability, 20 reliability
24 reliability » 2.4 reliability, 4 reliability, 14 reliability
2 reliability » 3 reliability, 5 reliability
23 safety » 3 safety, 2 safety, 13 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 (quality control))%((((2c reliability) OR (((21 reliability) OR (24 reliability))))) OR (2 reliability))%23 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_quality control) or (quality control))%((((2c reliability) or (((21 reliability) OR (24 reliability))))) or (2 reliability))%23 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) or (quality control))%((((2c reliability) or (((21 reliability) OR (24 reliability))))) or (2 reliability))%23 safety and risk%22*.