Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
ve cham » va cham, ve chat, vu cham
nang ma » tang ma, sang ma, nang cao
luc van » luoc van, luu van, duc van
va cam » va cham, va cac, va cao
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cam » ve cac, ve cai, ve cau
ma hoi » mai hoi, xa hoi, ma hoa

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 sac ky nang ma hoi. hieu ((((ve cam) OR (ve cham))) OR (va cam)) luc van hanh dai cua vat~.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ma hoi. hieu ((((ve cam) or (ve cham))) or (va cam)) luc van hanh dai cua vat*.