Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
hien hanh » dieu hanh
hanh mang » nhanh mang, hanh trang, nhanh lang
mang luan » tang luan, hang luan, bang luan
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
han tap » han tai, nhan tai, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - hanh mang luan trong cong dan ((han tap) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - hanh mang luan trong cong dan ((han tap) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh mang luan trong cong dan ((han tap) OR (toan tap))*.