Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung tam, tran tuan, truong thanh
trong tac » trong cac, tuong tac, trong tuc
trong tan » trong quan, trong cac, trong ca
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan ban, toan tap

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