Perhaps you should try some spelling variations:
mang lai » mang lam, dang loai, trang lai
phat tuu » phan tu, pham tu, phap tu
hieu su » hieu sau, tieu su, hieu so
su phat » su pham, tu phat, xu phat
va hanh » van hanh, va thanh, va danh
tu bai » tu ban, tu bat, te bai
bai ky » ban ky, sai ky, bac ky
tuu va » tu va, cuu va, tru va
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 bai ky ((mang lai) or (mang luoi)) hoi. hieu su phat tuu va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu bai ky ((mang lai) OR (mang luoi)) hoi. hieu su phat tuu va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu bai ky ((mang lai) or (mang luoi)) hoi. hieu su phat tuu va hanh vi cua te*.