Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung hoac » trung hoc, trung hoa, trung ha
hoac khong » hoa khong, hoc khong, hay khong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - thanh trung hoac khong ((cong tan) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh trung hoac khong ((cong tan) OR (cong san)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh trung hoac khong ((cong tan) or (cong san)) toan tap*.