Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
xuan trung » xuan truong, quang trung, doan trung
hoc thieu » toc thieu, hoc hien
cua trung » cua truong, cua nhung, ba trung
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan 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 - hanh tranh ((cua trung) OR (xuan trung)) huong dan than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh tranh ((cua trung) OR (xuan trung)) huong dan than tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh ((cua trung) OR (xuan trung)) huong dan than tap*.