Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
tung cua » trung cua, tuong cua, dung cua
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 - thanh tung 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 - thanh tung cua tong ((cong dan) OR (huong dan)) than ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tung cua tong ((cong dan) or (huong dan)) than ban*.