Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
hanh tai » hang tai, han tai, hinh tai
duc van » duc va, duc manh, duc phan
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
bai ky » ban ky, sai ky, bac ky
ma hoi » mai hoi, xa hoi, ma hoa
tu bai » tu ban, tu bat, te bai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu bai ky tang ma hoi. hieu ve cham ((duc van) OR (duc tan)) ((hanh tai) OR (thanh tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu bai ky tang ma hoi. hieu ve cham ((duc van) or (duc tan)) ((hanh tai) OR (thanh tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu bai ky tang ma hoi. hieu ve cham ((duc van) or (duc tan)) ((hanh tai) OR (thanh tai)) cua tre*.