Perhaps you should try some spelling variations:
dat duoc » dat nuoc, luat duoc, xuat duoc
tang mai » tang ma, tang tai, lang mai
da duoc » tao duoc, hoa duoc
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
vu sang » vua sang, vu dang, vu san
sang ky » sang kyo, dang ky, tang ky
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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 mai hoi. hieu ve ((dat duoc) or (da duoc)) va hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sang ky tang mai hoi. hieu ve ((dat duoc) OR (da duoc)) va hanh di cua tu*.