Perhaps you should try some spelling variations:
dang hanh » dang thanh, ban hanh, dang van
thuc dang » thuoc dang, thuc dan, thuc dung
vu sang » vua sang, vu dang, vu san
sang ky » sang kyo, dang ky, tang ky
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
ma hoi » mai hoi, xa hoi, ma hoa
va nam » van nam, ha nam, va nay
le nam » ly nam, he nam, le na
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sang ky tang ma hoi. hieu ((va nam) or (le nam)) thuc dang hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sang ky tang ma hoi. hieu ((va nam) OR (le nam)) thuc dang hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: vu sang ky tang ma hoi. hieu ((va nam) or (le nam)) thuc dang hanh vi cua te*.