Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
tong thong » thong thong, dong thong, cong thong
hoc thieu » toc thieu, hoc hien
hanh dung » thanh dung, anh dung, hanh dong
luan tong » luan tuong, luan cong, luan dong
tin toan » nin toan, trinh toan, thien toan

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 - hanh dung luan tong thong ((tin toan) OR (tinh toan)) cao~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh dung luan tong thong ((tin toan) or (tinh toan)) cao*.