Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
vang thanh » van thanh, dang thanh, tang thanh
tieu sach » chieu sach, dien sach, te sach
thanh cau » thanh chau, thanh mau, nhanh cau
anh tang » anh bang, anh dang, anh nang
ban cong » bang cong, phan cong, ban huong
van cong » van dong, van phong, 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 - ((thanh dung) or (anh tang)) cua ((ban cong) OR (van cong)) vang thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((thanh dung) OR (anh tang)) cua ((ban cong) OR (van cong)) vang thanh cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - ((thanh dung) or (anh tang)) cua ((ban cong) OR (van cong)) vang thanh cau*".