Perhaps you should try some spelling variations:
thuc dang » thuoc dang, thuc dan, thuc dung
dang hanh » dang thanh, ban hanh, dang van
sach hoi » sach doi, sach moi, cach thoi
hoi nang » hoi lang, ho nang, hoa nang
hieu van » thien van, lieu va, hieu ve
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de 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: te sach hoi nang ma hoi. ((hieu van) OR (hieu va)) am thuc dang hanh di cua vat~.
• Adding a wildcard symbol may retrieve word variants: te sach hoi nang ma hoi. ((hieu van) or (hieu va)) am thuc dang hanh di cua vat*.