Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
van thuong » va thuong, van chuong, van phuong
thanh hoa » thanh pho
cong tang » cong thang, cong lang, cong vang
cong tan » cong tac, cong san, cong thanh
phan cac » nhan cach, phan dau, phan lap
hoa van » hoa dan, hoang van, hoa phan

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 xanh) OR (chieu sach)) - thanh hoa van thuong ((cong tan) or (cong tang)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - thanh hoa van thuong ((cong tan) OR (cong tang)) phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - thanh hoa van thuong ((cong tan) or (cong tang)) phan cac".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - thanh hoa van thuong ((cong tan) or (cong tang)) phan cac*.