Well, the docs clearly say that the label "Target address for the 'See more pictures' link in e-cards" in coppermine config is completely wrong (that's why it will be changed in future versions of coppermine to "URL of your coppermine gallery folder (no 'index.php' or similar at the end)" with a footnote saying
QuoteThis is the URL where a user will be directed when he will click on the "See more pictures" link in an e-card. This should normally be the URL for your gallery (just the path to your coppermine folder). Don't specify a certain file (like index.php) in this field.
In older versions of Coppermine, this field used to be labelled "Target address for the 'See more pictures' link in e-cards", but since this url is used in other places of coppermine as well the label was changed.
The label itself is a left-over from previous versions of coppermine, where the path used to be only for the ecards link - as all the translations for cpg1.3.x have already started to roll back in, we decided to keep the label as-is for cpg1.3.x and only change it for cpg1.4.x
You
have to set "Target address for the 'See more pictures' link in e-cards" to the folder your coppermine install resides in (in your case http://phongtranh.truyentranh.com/gallery ), and you will have to point the link in the ecards template to something else by manually editing it (in themes/yourtheme/theme.php, look for
// HTML template for e-cards and modify accordingly). This has been asked quite often, and answered as well - next time, please search before posting.
Joachim