Perhaps you should try some spelling variations:
_quality control » byquality control, quality controls, qouality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
11 reliability » 1 reliability, 3 reliability, 5 reliability
4 reliability » 3 reliability, 5 reliability
2 reliability » 3 reliability, 5 reliability
4 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: %((_quality control) OR (quality control))%((2c reliability) OR (((11 reliability) OR (((4 reliability) OR (2 reliability))))))%4 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 (((11 reliability) or (((4 reliability) or (2 reliability))))))%4 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) OR (quality control))%((2c reliability) or (((11 reliability) or (((4 reliability) or (2 reliability))))))%4 safety and risk%22*.