Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » hanh chinh
quang song » quang dong, quang cuong, quang hoang
song trong » cong trong, dong trong, sang trong
hoc thieu » toc thieu, hoc hien
trong tan » trong quan, trong cac, trong ca
tan van » tran van, tang van, luan van

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) OR (canh tranh)) quang song trong tan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((hanh trinh) OR (canh tranh)) quang song trong tan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh trinh) OR (canh tranh)) quang song trong tan van ban*.