Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
dan khai » dang khai, van khai, dang khoi
dan hai » doan hai, dang hai, van hai
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 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) OR (dan khai)) cau 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) OR (dan khai)) cau 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) OR (dan khai)) cau treo*.