Perhaps you should try some spelling variations:
22quality control » quality control, byquality control, forquality control
_quality control » quality control, byquality control, qouality control
quality controls » quality control, quality concepts
qualite controle » quality control
2 reliability » 3 reliability, 5 reliability
2c safety » 22 safety, 23 safety, 21 safety
25 safety » 5 safety, 15 safety, 22 safety
2 safety » _ safety, a safety, 5 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: %((22quality control) OR (((_quality control) OR (((quality controls) OR (qualite controle))))))%2 reliability%((((2c safety) OR (25 safety))) OR (2 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (((_quality control) or (((quality controls) OR (qualite controle))))))%2 reliability%((((2c safety) or (25 safety))) or (2 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((_quality control) or (((quality controls) OR (qualite controle))))))%2 reliability%((((2c safety) or (25 safety))) or (2 safety)) and risk%22*.