Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, hanh mang, hanh tung
bang song » nang song
danh toan » manh toan, anh toan, dang toan
anh tang » anh bang, anh dang, anh nang
cua bang » chua bang, cua ban, cua dang
dan toan » van toan, dan than, manh toan

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