Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
tam dung » tam duong, tan dung, am dung
tac dung » sach dung, xay dung, tin dung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chiet tach)) - thanh trung ((tam dung) OR (tac dung)) cong tan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chiet tach)) - thanh trung ((tam dung) OR (tac dung)) cong tan toan tap~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chiet tach)) - thanh trung ((tam dung) OR (tac dung)) cong tan toan tap*.