Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
bang thanh » ban thanh, dang thanh, tang thanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
manh tran » manh toan, manh tuan, canh tranh
tran tuan » tran xuan, tran quang, tran thanh
tuan dang » tran dang, tuan bang, tuan dung
dang cong » dung cong
cong bang » cuong bang, dong bang, hong bang
thanh hai » thanh phan, thanh hoa, thanh san

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (chieu sang)) - manh tran tuan dang cong bang thanh hai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu sang)) - manh tran tuan dang cong bang thanh hai*.