Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
cong thanh » dong thanh, cong trinh, truong thanh
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
cong tan » cong tac, cong san, cong ty

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - thanh trung cap nhung ((cong thanh) OR (cong tan)) phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - thanh trung cap nhung ((cong thanh) OR (cong tan)) phan tu~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - thanh trung cap nhung ((cong thanh) OR (cong tan)) phan tu*.