Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
duc ban » duc tan, duc van, dua ban
cam duc » cam xuc, cao duc, pham duc
va cam » va cham, va cac, va cao
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
me hoi » le hoi
ma hoi » mai hoi, xa hoi, va hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky tang ((((ma hoi) OR (me hoi))) or (ma hoa)). hieu va cam duc ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang ((((ma hoi) OR (me hoi))) OR (ma hoa)). hieu va cam duc ban thanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang ((((ma hoi) OR (me hoi))) or (ma hoa)). hieu va cam duc ban thanh dai cua tre*".