Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong thanh » dong thanh, cong trinh, truong thanh
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, 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: ((mot chieu) or (hoc thieu)) xanh - thanh trung cua dung ((cong tan) OR (cong thanh)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc thieu)) xanh - thanh trung cua dung ((cong tan) OR (cong thanh)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (hoc thieu)) xanh - thanh trung cua dung ((cong tan) OR (cong thanh)) van ban".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc thieu)) xanh - thanh trung cua dung ((cong tan) OR (cong thanh)) van ban*.