Perhaps you should try some spelling variations:
vang thanh » van thanh, dang thanh, tang thanh
tieu sach » chieu sach, dien sach, te sach
hanh dung » thanh dung, anh dung, manh dung
hanh dong » anh dong, ha dong
cong vang » cong lang, cong quang, cong ngang
thanh mau » hanh mau, thanh san, thanh hai
anh tang » anh bang, anh dang, anh nang
ban cong » bang cong, van cong, phan cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - ((((hanh dung) or (hanh dong))) or (anh tang)) cua ban cong vang thanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((((hanh dung) OR (hanh dong))) OR (anh tang)) cua ban cong vang thanh mau.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((((hanh dung) or (hanh dong))) or (anh tang)) cua ban cong vang thanh mau*.