Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
duong cong » dung cong, luong cong, duong trong
hoc thieu » toc thieu, hoc hien
tang mau » trang mau, dang mau, thanh mau
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
tang ma » mang may, tang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - hanh ((tang mau) or (tang ma)) duong cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((tang mau) OR (tang ma)) duong cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((tang mau) or (tang ma)) duong cong tan toan ban*.