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, 4 reliability, 20 reliability
14 reliability » 4 reliability, 11 reliability, 13 reliability
ic reliability » 3 reliability, 5 reliability, 7 reliability
2 reliability » 3 reliability, 5 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))%((((24 reliability) OR (14 reliability))) OR (((ic reliability) OR (2 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))%((((24 reliability) or (14 reliability))) or (((ic reliability) or (2 reliability))))%((2c safety) or (a safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) OR (quality controls))%((((24 reliability) or (14 reliability))) or (((ic reliability) or (2 reliability))))%((2c safety) or (a safety)) and risk%22*.