Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung quan » truong quan, trong quan, trung tuan
hoc chieu » hoc thieu, ho chieu, hoc hien
quan hang » quan hoang, quan lang, quan hanh
hang cong » dang cong, hang nong, bang cong
cong san » cong tac

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 - thanh trung quan hang cong san ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - thanh trung quan hang cong san ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - thanh trung quan hang cong san ((toan ban) or (van ban))*.