Perhaps you should try some spelling variations:
hien daii » vien dai, nhien dai, bien dai
sach thi » sach thu, sach tai, sach thieu
thi hang » thi hanh, thi nang, thi hong
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
hang ma » hang va, hang ca, tang ma
tuc van » thuc van, truc van, tuc va
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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: vu sach thi hang ma hoi. hieu ((hien dai) OR (hien daii)) tuc van hanh vi cua vat~.
• Adding a wildcard symbol may retrieve word variants: vu sach thi hang ma hoi. hieu ((hien dai) or (hien daii)) tuc van hanh vi cua vat*.