Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
hanh tang » hanh trang, hanh mang, hanh tung
bang song » nang song
song danh » song hanh, cong danh, song xanh
danh toan » manh toan, anh toan, dan toan
anh tang » anh bang, anh dang, anh nang
cua bang » chua bang, cua ban, cua dang
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) OR (thien anh)) - ((hanh tang) or (anh tang)) cua bang song danh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - ((hanh tang) OR (anh tang)) cua bang song danh toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - ((hanh tang) or (anh tang)) cua bang song danh toan cao*".