Amazon seems to be truncating their query results.
For generic album titles like "Greatest Hits" you won't usually find the correct artist.
I have found that adding the %artist% to the %album% greatly improve the results.
For example if I rename the album from "Example" to "For Squirrels - Example" I'll get exactly what I want.
Is there a way to automate the query for Amazon? Yes!
edit in Notepad: MyAmazon.com.src
change line to: [SearchBy]=%artist% %album%
save as: &MyA&mazon.com.src
Now I can press [Alt]-S,M and get very precise results.