Perhaps you should try some spelling variations:
chua tre » chua tri, cua tre, chua trieu
doanh va » doan va, doanh tai, doanh cua
va doanh » van doanh, vay doanh, va danh
lam duoc » nam duoc, luat duoc, lam thuoc
hieu van » thien van, lieu va, hieu ve
tang van » dang van, hoang van, trong van
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
duoc va » nuoc va, duc va, duoc ma
lang xa » lang ha, dang xay, lang van
va chua » vua chua, ca chua, va chu
te sach » toc sach

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 ty ((lang xa) or (tang van)) hoi. ((hieu van) OR (hieu va)) lam duoc va doanh va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((lang xa) OR (tang van)) hoi. ((hieu van) OR (hieu va)) lam duoc va doanh va chua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((lang xa) or (tang van)) hoi. ((hieu van) OR (hieu va)) lam duoc va doanh va chua tre*".