Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, quality controls
20 reliability » 10 reliability, 24 reliability, 29 reliability
21 reliability » 1 reliability, 24 reliability, 29 reliability
11 reliability » 1 reliability, 7 reliability, 8 reliability
9 reliability » 4 reliability
23 safety » 3 safety, 2 safety, 13 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%((((20 reliability) OR (((((21 reliability) OR (((11 reliability) OR (3 reliability))))) OR (2 reliability))))) OR (((5 reliability) OR (9 reliability))))%23 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%_quality control%((((20 reliability) or (((((21 reliability) or (((11 reliability) OR (3 reliability))))) or (2 reliability))))) or (((5 reliability) or (9 reliability))))%23 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %_quality control%((((20 reliability) or (((((21 reliability) or (((11 reliability) OR (3 reliability))))) or (2 reliability))))) or (((5 reliability) or (9 reliability))))%23 safety and risk%22*.