Perhaps you should try some spelling variations:
hai hau » hai chau, dai hau, hai hai
hai cau » hai chau, hai chu, hoi cau
lam tuc » lam thuoc, lam truoc, luat tuc
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
va lam » van lam, va lap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang ma) OR (sang ma)) hoi. hieu va lam tuc va dan ((hai cau) OR (hai hau)) treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang ma) or (sang ma)) hoi. hieu va lam tuc va dan ((hai cau) OR (hai hau)) treo~".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang ma) or (sang ma)) hoi. hieu va lam tuc va dan ((hai cau) OR (hai hau)) treo*.