Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
trai tuan » tri tuan, tai tuan, trang tuan
tran tuan » tran xuan, tran quang, tran thanh
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty

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

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