Perhaps you should try some spelling variations:
dat duoc » dat nuoc, da duoc, luat duoc
nang tai » hang tai, tang tai, sang tai
hieu cua » hieu qua, dieu cua, hieu ca
bieu cua » dieu cua, ben cua, dien cua
te sach » toc sach
cua tre » cua te, cua triet, dua tren
va danh » va dinh, va dan, va hanh
duoc va » nuoc va, duc va, duoc ma
sach ky » sac ky, sach y, sach ty
tai hoi » tai khoi, dai hoi, tai hai
cuu tre » cau tren, cau treo

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang tai hoi. ((hieu cua) or (bieu cua)) dat duoc va danh cho ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang tai hoi. ((hieu cua) OR (bieu cua)) dat duoc va danh cho ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang tai hoi. ((hieu cua) or (bieu cua)) dat duoc va danh cho ((cua tre) OR (cuu tre))*".