Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tran » thanh trang, thanh toan, thanh tra
hieu manh » chieu xanh, hieu nganh, hien hanh
lang cong » dang cong, bang cong, hang cong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
tran van » luan van
van lang » van nang, va lang, van hang
toan cao » toan ban, toan tap

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: hoc ((((hieu manh) OR (dieu hanh))) OR (chieu tinh)) - thanh tran van lang cong hach toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hieu manh) OR (dieu hanh))) or (chieu tinh)) - thanh tran van lang cong hach toan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) OR (dieu hanh))) or (chieu tinh)) - thanh tran van lang cong hach toan cao*.