Perhaps you should try some spelling variations:
thanh trang » hanh trang, thanh thang, thanh tran
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
dang cong » dung cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu tinh)) - ((thanh trang) OR (thanh trung)) va dang cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - ((thanh trang) OR (thanh trung)) va dang cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu tinh)) - ((thanh trang) OR (thanh trung)) va dang cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu tinh)) - ((thanh trang) OR (thanh trung)) va dang cong tac toan cao*.