Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
ban thanh » ban hanh, ban hang
thai cua » than cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, dua ban
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
ma hoi » xa hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam
su xac » pu xac, su cac
su sac » su sach, su cac

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) or (su xac)) ky tang ((ma hoi) or (mai hoi)). hieu ve cam duc ban thanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky tang ((ma hoi) OR (mai hoi)). hieu ve cam duc ban thanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su xac)) ky tang ((ma hoi) or (mai hoi)). hieu ve cam duc ban thanh thai cua tre*.