Perhaps you should try some spelling variations:
22quality control » quality control, byquality control, forquality control
_quality control » quality control, byquality control, quality controls
ic reliability » 5 reliability, 7 reliability, 8 reliability
2 reliability » 5 reliability
3 reliability » 5 reliability
a safety » a safe

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: %((22quality control) OR (_quality control))%((2 reliability) OR (((ic reliability) OR (3 reliability))))%((5 safety) OR (a safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (_quality control))%((2 reliability) or (((ic reliability) or (3 reliability))))%((5 safety) or (a safety)) and risk%22*.