Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

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