Perhaps you should try some spelling variations:
luan tuong » luan luong, luat thuong, xuan truong
tuong cong » truong cong, trong cong, tong cong
hanh mang » nhanh mang, hanh trang, nhanh lang
mang luan » tang luan, hang luan, bang luan
doc hieu » hoc thieu, hoc hien
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) manh - hanh mang luan tuong cong san ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) manh - hanh mang luan tuong cong san ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (toc thieu)) manh - hanh mang luan tuong cong san ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) manh - hanh mang luan tuong cong san ((toan cau) OR (toan cao))*.