Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua truong » xuan truong, cac truong, xa truong
hoc thieu » toc thieu, hoc hien
cua trung » xuan trung, 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) or (thanh trung)) ((cua trung) OR (cua truong)) huong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh tranh) OR (thanh trung)) ((cua trung) OR (cua truong)) huong dan than tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((hanh tranh) or (thanh trung)) ((cua trung) OR (cua truong)) huong dan than tap*".