Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung cam » trung tam, trung cap, trung nam
cong bang » cuong bang, dong bang, hong bang
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong tan, cong dan, dong ban
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: ho chieu sang - thanh trung cam nang ((((cong ban) or (cong bang))) or (cong san)) thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung cam nang ((((cong ban) OR (cong bang))) OR (cong san)) thanh cac.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung cam nang ((((cong ban) or (cong bang))) or (cong san)) thanh cac*.