@Anh Huy
Just to add to my earlier comment, the Sanwei Fextra is a safe bet. I'm no expert but it was personally my favorite all wood blade and I've tried quite a few.
Nittaku Acoustic, Nittaku Ludeack, Yasaka Sweden Extra, Donic Appelgren, and Yinhe U2 I all tried at one point.
Fextra was...