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