Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
tung dan » dung dan, huong dan, trung dai
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
tung ap » tang ap, tung bay, tung mai
ban cau » bang cau, ban can, van cau

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 ap) or (tung dan)) dung ((cong dan) or (cong tac)) ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((tung ap) OR (tung dan)) dung ((cong dan) OR (cong tac)) ban cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((tung ap) or (tung dan)) dung ((cong dan) or (cong tac)) ban cau*.