Perhaps you should try some spelling variations:
sang dai » sang tai, lang dai, sang mai
pham tuc » pham thuc, pham duc, pham tu
ky sang » ky nang, ky dang, ky tang
dai hoi » dai hoc, dai hai, dai moi
hieu su » hieu sau, tieu su, hieu so
su pham » san pham
va hanh » van hanh, va thanh, va danh
tu sai » tu bai, tu san, tu cai
te bai » te bao, te tai, te ban
tuc va » thuc va, truc va, tuc xa
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: ((tu sai) or (te bai)) ky sang dai hoi. hieu su pham tuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (te bai)) ky sang dai hoi. hieu su pham tuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sai) or (te bai)) ky sang dai hoi. hieu su pham tuc va hanh vi cua te*.