Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh dai » thanh hai, thanh tai, thanh dat
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
ky tang » ky nang, ky dang, kho tang
cua tre » cuu tre, cua triet, dua tren
duc ban » duc tan, duc van, dua ban
su sac » su sach, su cac, su xac
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, me hoi
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: su sac ky tang ((ma hoi) or (ma hoa)). hieu ve cam duc ban thanh dai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang ((ma hoi) OR (ma hoa)). hieu ve cam duc ban thanh dai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang ((ma hoi) or (ma hoa)). hieu ve cam duc ban thanh dai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang ((ma hoi) or (ma hoa)). hieu ve cam duc ban thanh dai ((cua tre) OR (cua te))*.