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 » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang cau hoa. hieu ve chat huu ((va thanh) or (ban hanh)) vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang cau hoa. hieu ve chat huu ((va thanh) OR (ban hanh)) vai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang cau hoa. hieu ve chat huu ((va thanh) or (ban hanh)) vai ((cua tre) or (cuu tre))*.