Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, qouality control
quality controls » quality control, qualite controle, quality concepts
2.4 reliability » 2.6 reliability, 5.4 reliability, 2.2 reliability
ic reliability » 3 reliability, 2 reliability, 7 reliability
5 reliability » 3 reliability
2c safety » 2 safety, 22 safety, 23 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: %((_quality control) OR (quality controls))%((2.4 reliability) OR (((ic reliability) OR (5 reliability))))%((2c safety) OR (a safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_quality control) or (quality controls))%((2.4 reliability) or (((ic reliability) OR (5 reliability))))%((2c safety) or (a safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) or (quality controls))%((2.4 reliability) or (((ic reliability) OR (5 reliability))))%((2c safety) or (a safety)) and risk%22*.