Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, qouality control
quality controls » quality control, qualite controle, quality concepts
ic reliability » 7 reliability, 8 reliability, 11 reliability
4 reliability » 3 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
2c safety » 2 safety, 22 safety, 23 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 (quality controls))%((4 reliability) OR (((((ic reliability) OR (5 reliability))) OR (2 reliability))))%((((2c safety) OR (_ safety))) OR (3 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_quality control) OR (quality controls))%((4 reliability) or (((((ic reliability) or (5 reliability))) or (2 reliability))))%((((2c safety) or (_ safety))) or (3 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((_quality control) OR (quality controls))%((4 reliability) or (((((ic reliability) or (5 reliability))) or (2 reliability))))%((((2c safety) or (_ safety))) or (3 safety)) and risk%22*.