Perhaps you should try some spelling variations:
byquality control » quality control, _quality control, forquality control
21 reliability » 1 reliability, 11 reliability, 20 reliability
9 reliability » 4 reliability
2 safety » 5 safety, 4 safety, 3 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: %byquality control%((((5 reliability) OR (((21 reliability) OR (2 reliability))))) OR (((9 reliability) OR (3 reliability))))%2 safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %byquality control%((((5 reliability) or (((21 reliability) or (2 reliability))))) or (((9 reliability) or (3 reliability))))%2 safety and risk%22*.