Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
chat huu » pham huu
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
cau hoa » cau hoi
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
cua tre » cuu tre, cua triet, dua tren
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
cua te » cua tu

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: te sac ky nang cau hoa. hieu ve chat huu ((va thanh) OR (ban hanh)) vai ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang cau hoa. hieu ve chat huu ((va thanh) or (ban hanh)) vai ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang cau hoa. hieu ve chat huu ((va thanh) or (ban hanh)) vai ((cua tre) OR (cua te))*.