Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
khanh toan » khanh thanh, khanh thuan, manh toan
thanh toan » thanh hoa, thanh san, tinh toan
thien anh » thien danh, tien anh, thien thanh
tranh qua » tranh cua, thanh qua, trinh qua
song cong » cong cong, tong cong, song hong

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: hoc ((thieu xanh) OR (thien anh)) - canh tranh qua song cong ((khanh toan) OR (thanh toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - canh tranh qua song cong ((khanh toan) OR (thanh toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - canh tranh qua song cong ((khanh toan) OR (thanh toan)) cau*.