Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
cua tong » cua cong, cua dong, cua nong
cong dan » cong tan, huong dan, cong tac
cong san » cong tac
chon cac » cho cac, thong cac, hoc cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh trung cua tong ((((cong dan) or (cong dong))) or (cong san)) chon cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh trung cua tong ((((cong dan) OR (cong dong))) OR (cong san)) chon cac.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung cua tong ((((cong dan) or (cong dong))) or (cong san)) chon cac*.