Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, qouality control
quality controls » quality control, qualite controle, quality concepts
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
ic reliability » 3 reliability, 5 reliability, 2 reliability
2c safety » 2 safety, 22 safety, 23 safety
3 safety » 5 safety, 4 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 controls))%((24 reliability) OR (ic reliability))%((2c safety) OR (((3 safety) OR (_ safety)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_quality control) or (quality controls))%((24 reliability) or (ic reliability))%((2c safety) or (((3 safety) OR (_ safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) or (quality controls))%((24 reliability) or (ic reliability))%((2c safety) or (((3 safety) OR (_ safety)))) and risk%22*.