Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
hieu su » hieu sau, tieu su, hieu suat
hieu so » thieu so
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
choi tu » hoi tu, cho tu, chon tu
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
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 sac ky ((sang ma) or (nang ma)) hoi. ((hieu su) OR (hieu so)) choi tu va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((sang ma) OR (nang ma)) hoi. ((hieu su) OR (hieu so)) choi tu va thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((sang ma) or (nang ma)) hoi. ((hieu su) OR (hieu so)) choi tu va thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((sang ma) or (nang ma)) hoi. ((hieu su) OR (hieu so)) choi tu va thanh vi cua te*.