Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trung cua » truong cua, trung tuan, trung cap
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, cong dong
than ban » thanh ban, toan ban, than man

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) OR (chieu sach)) - thanh trung cua tong ((cong dan) or (huong dan)) than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - thanh trung cua tong ((cong dan) OR (huong dan)) than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu sach)) - thanh trung cua tong ((cong dan) or (huong dan)) than ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu sach)) - thanh trung cua tong ((cong dan) or (huong dan)) than ban*.