Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
than trong » thang trong, thuan trong, tran trong
tung than » tung thanh, cung than, trung thanh
cong van » cong vang, cong san, song van
qua ban » cua ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - thanh tung than trong cong van ((qua ban) OR (qua quan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sach)) - thanh tung than trong cong van ((qua ban) OR (qua quan))~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - thanh tung than trong cong van ((qua ban) OR (qua quan))*.