Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
mang luan » tang luan, hang luan, bang luan
luan tong » luan tuong, luan cong, luan dong
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tuan ban » tuan bang, luan ban, quang ban
toan ban » van ban

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 mang luan tong ((cong tan) OR (cong san)) ((tuan ban) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh mang luan tong ((cong tan) or (cong san)) ((tuan ban) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh mang luan tong ((cong tan) or (cong san)) ((tuan ban) OR (toan ban))*.