Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong tan, huong dan, cong dong
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 cua thong ((cong dan) OR (cong san)) phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung cua thong ((cong dan) OR (cong san)) phan tu".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung cua thong ((cong dan) OR (cong san)) phan tu*.