Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
thieu xanh » chieu xanh, hieu manh, thien anh
canh huong » anh huong, canh duong, manh huong
hoc thieu » toc thieu, hoc hien
tinh luat » trinh luat, hinh luat, tinh chat
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

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 - canh ((tinh luat) OR (trinh luan)) canh huong ((dan toan) or (ban than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh ((tinh luat) OR (trinh luan)) canh huong ((dan toan) OR (ban than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((tinh luat) OR (trinh luan)) canh huong ((dan toan) or (ban than)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((tinh luat) OR (trinh luan)) canh huong ((dan toan) or (ban than)) cau*.