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