Perhaps you should try some spelling variations:
hien hieu » thien hieu, nhien lieu, dien chieu
hieu dat » bieu dat, hieu bat, hieu dac
hanh sai » hanh san, hanh tai, danh sai
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
nang xa » lang xa, nang ma, mang xa
va hanh » van hanh, va thanh, va danh
sai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
nuoc » quoc, duoc, ngoc

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 ly ((nang xa) or (nang x)) hoi. hien hieu dat nuoc va hanh sai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly ((nang xa) OR (nang x)) hoi. hien hieu dat nuoc va hanh sai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ly ((nang xa) or (nang x)) hoi. hien hieu dat nuoc va hanh sai cua tre*.