ngày sinh nhật 
birthday like: ngày sinh nhật → →
der Geburtstag ☊ 
ngày sinh nhật ☊ 
☊ I feel awful about forgetting her birthday. ☊ awful ☊
a birthday/get-well/good luck card ☊ card ☊
He used his wife's birthday as a convenient excuse for not going to the meeting. ☊ convenient ☊
excuse (for doing sth): His excuse for forgetting her birthday was that he had lost his diary. ☊ excuse ☊
My birthday's still a fair way off (= it's still a long time until my birthday). ☊ fair ☊
She gave me a watch for my birthday. ☊ for ☊
What (= What presents) did you get for your birthday? ☊ get ☊
Here's a little something (= a small present) for your birthday. ☊ little ☊
on your birthday ☊ on ☊
a birthday/dinner/garden, etc. party ☊ party ☊