Perhaps you should try some spelling variations:
thang thanh » tang thanh, thanh thanh, thong thanh
chieu tinh » trieu tinh, lieu tinh, chau tinh
quang hang » quang hoang, quang khang, quang thang
cong thang » cong thanh, cang thang, cong thong
thanh phan » thanh pho, thanh san, thanh toan
hieu xanh » chieu xanh, hieu manh, hieu nganh
manh tran » manh toan, manh tuan, canh tranh
hang cong » dang cong, hang nong, bang cong

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 tinh)) - manh tran quang hang cong thang thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu tinh)) - manh tran quang hang cong thang thanh phan*.