Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
cau treo » cau theo, cau tren, cau triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
dai hoa » dai khoa, dai hoc, dai hoi
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
cua tre » cua te, cuu tre, cua triet

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

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