Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
quang song » quang cuong, quang hoang, quang vuong
quang dong » quang dung, quan dong, quang cuong
hoc thieu » toc thieu, hoc hien
cac toan » cac khoan, hach toan, cac thanh
toan ban » van ban

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 trinh ((quang song) or (quang dong)) trong cac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh ((quang song) OR (quang dong)) trong cac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh ((quang song) or (quang dong)) trong cac toan ban*.