Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
dong thong » thong thong, nong thon, dong thanh
hoc thieu » toc thieu, hoc hien
hanh dung » thanh dung, anh dung, hanh dong
luan dong » luan cong, quan dong, luan nong
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 dong thong ((tin toan) OR (tinh toan)) cao~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh dung luan dong thong ((tin toan) or (tinh toan)) cao*.