Perhaps you should try some spelling variations:
thanh chuong » thanh huong, thanh cong, nhanh chong
thanh tuong » thanh thuong, thanh tung, thanh huong
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
dan toan » van toan, dan than, manh toan
va dung » van dung, va duong, vat dung

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 tinh - ((thanh tuong) or (thanh chuong)) va dung cong ((dan toan) or (anh tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - ((thanh tuong) OR (thanh chuong)) va dung cong ((dan toan) OR (anh tuan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - ((thanh tuong) or (thanh chuong)) va dung cong ((dan toan) or (anh tuan)) cao*.