Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
xuan trang » xuan trung, xuan truong, quan trong
thanh cham » thanh pham, thanh cha, hanh cham
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh dung » thanh dung, anh dung, hanh dong
dung xuan » duong xuan, dung luan, dung quan
cong ban » cong bang, cong tan, cong dan
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: theo ((chieu sang) or (lieu tinh)) - hanh dung xuan trang ((cong ban) OR (cong san)) thanh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (lieu tinh)) - hanh dung xuan trang ((cong ban) OR (cong san)) thanh cham.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (lieu tinh)) - hanh dung xuan trang ((cong ban) OR (cong san)) thanh cham".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (lieu tinh)) - hanh dung xuan trang ((cong ban) OR (cong san)) thanh cham*.