Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, quality controls
ic reliability » 5 reliability, 2 reliability, 7 reliability
9 reliability » 5 reliability, 2 reliability, 4 reliability
3 reliability » 5 reliability
2 safety » 5 safety, 4 safety, 3 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%((ic reliability) OR (((9 reliability) OR (3 reliability))))%((2 safety) OR (_ safety)) AND risk%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%_quality control%((ic reliability) or (((9 reliability) or (3 reliability))))%((2 safety) OR (_ safety)) and risk%22*".