finding hidden coupons on save.ca and websaver etc....

 i found out a secret on how to find all those hidden coupons on save.ca and other coupon sites. If you go to google or any search engine on the net and type in site :   and then what site your looking stuff on you can find all the hidden ones for example if I'm looking for hidden coupons on save.ca it would look like this site:save.ca  or websaver site:websaver.ca but this could work for any site i swear its the best way to look up things on  certain sites