Perhaps you should try some spelling variations:
_quality control » byquality control, quality controls, qouality control
qualify control » quality controls, qouality control, quality contol
9 reliability » 3 reliability, 2 reliability, 5 reliability
2c safety » 2 safety, 22 safety, 23 safety

Try widening your search to All Fields.

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) OR (qualify control))))%9 reliability%2c safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((quality control) or (((_quality control) or (qualify control))))%9 reliability%2c safety and risk%22*.