giỏi quá

very good!

Typed without accents: gioi qua

Meaning

very good!
interjection

well done, great job

Praise for someone's skill, often a learner's Vietnamese. The modest reply is Đâu có!
- Em nói tiếng Việt giỏi quá!
  Your Vietnamese is really good!
- Giỏi quá, con làm đúng hết rồi!
  Well done, you got them all right!