Perhaps you should try some spelling variations:
forquality control » byquality control, fertility control, quality controls
_quality control » byquality control, quality controls, qualify control
qouality control » quality controls, qualify control, quality contral
2c reliability » 20 reliability, 24 reliability, 29 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
4 safety » 5 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: %((forquality control) OR (((((_quality control) OR (qouality control))) OR (quality control))))%((2c reliability) OR (((5 reliability) OR (2 reliability))))%4 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((forquality control) or (((((_quality control) OR (qouality control))) or (quality control))))%((2c reliability) or (((5 reliability) or (2 reliability))))%4 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((forquality control) or (((((_quality control) OR (qouality control))) or (quality control))))%((2c reliability) or (((5 reliability) or (2 reliability))))%4 safety and risk%22*.