Perhaps you should try some spelling variations:
han dong » hanh dong, phan dong, han duong
chat huu » pham huu
sach han » sach tham, sach danh, sach nang
te sach » toc sach
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi
huu va » cuu va, tuu va
dan va » dan ca, ban va, han va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach han dong ((ma hoi) or (xa hoi)). hieu va chat huu va ((dan va) or (doan va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach han dong ((ma hoi) OR (xa hoi)). hieu va chat huu va ((dan va) OR (doan va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach han dong ((ma hoi) or (xa hoi)). hieu va chat huu va ((dan va) or (doan va)) cua tre*.