Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh dung » thanh duong, thanh tung, thanh hung
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
dung cua » dung luan, dung cho
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan

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 - thanh dung cua ((nhung cong) or (tong cong)) ((san toan) or (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh dung cua ((nhung cong) OR (tong cong)) ((san toan) OR (dan toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh dung cua ((nhung cong) or (tong cong)) ((san toan) or (dan toan)) cau*.