Perhaps you should try some spelling variations:
byquality control » quality control, forquality control, quality controls
_quality control » quality control, quality controls, qouality control
2 reliability » 3 reliability
5 reliability » 3 reliability
2c safety » 22 safety, 23 safety, 21 safety
25 safety » 5 safety, 15 safety, 22 safety
2 safety » 5 safety, 4 safety
3 safety » 5 safety, 4 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 (byquality control))%((2 reliability) OR (5 reliability))%((((((2c safety) OR (25 safety))) OR (2 safety))) OR (3 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_quality control) OR (byquality control))%((2 reliability) or (5 reliability))%((((((2c safety) or (25 safety))) or (2 safety))) or (3 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) OR (byquality control))%((2 reliability) or (5 reliability))%((((((2c safety) or (25 safety))) or (2 safety))) or (3 safety)) and risk%22*.