Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
tang ma » mang may, tang van
tuc van » thuc van, truc van, tuc va
lai cua » dai cua, hai cua, lai chau
so anh » so sanh, so danh, do anh
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » vien cac
anh y » hanh y, anh d, anh _

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

• Performing a fuzzy search may retrieve terms with similar spellings: so anh y tang ma hoi. hieu ((va cac) or (ve cac)) tuc van hanh lai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so anh y tang ma hoi. hieu ((va cac) OR (ve cac)) tuc van hanh lai cua vat*.