Order Vietnamese word

Hello Phalcon.

It seen that We can't add 'COLLATE' in the SQL when we use "new Query($sql,$di)" My SQL query is SELECT * FROM devnet_provinces ORDER BY name COLLATE utf8_unicode_ci DESC.

I have to do like that because when i don't add 'COLLATE utf8_unicode_ci' it will doesn't know 'Đ'